| 35205 | Abell | W. | T. | Vernon | machinery for spinning wool | 5 | 13 | 1862 |
| 891808 | Adams | Frederick | W. | Selma | automatic drain cock for air brakes | 6 | 30 | 1908 |
| 47608 | Adams | J. | N. | Birmingham | corn planter | 5 | 9 | 1865 |
| 181300 | Aldridge | William | V. | Lebanon | marking attachment for land rollers | 8 | 22 | 1876 |
| 260920 | Allen | Azro | B. | Farmington | railway car | 7 | 11 | 1882 |
| D18475 | Atkins | James | C. | Milton | photographic vignette | 7 | 24 | 1888 |
| 1097285 | Bagby | James | A. | Stockport | clamp | 5 | 19 | 1914 |
| 181898 | Baker | James | W. | Benton's Port | farm gate | 9 | 5 | 1876 |
| 348508 | Barber | Alonzo | | Benton's Port | paint brush | 8 | 31 | 1886 |
| 1620794 | Barton | Roy | L. | Milton | harrow weight distributing device | 3 | 15 | 1927 |
| 259793 | Bauder | Charles | C. | Bonaparte | harness saddle | 6 | 20 | 1882 |
| 259793 | Bauder | George | E. | Bonaparte | harness saddle | 6 | 20 | 1882 |
| 63833 | Bean | W. | W. | Iowaville | wagon brake | 4 | 16 | 1867 |
| 567214 | Beard | Arnold | | Bonaparte | window screen | 9 | 8 | 1896 |
| 96188 | Beardsley | Aaron | | Mount Zion | show counter | 10 | 26 | 1869 |
| 276213 | Bergen | Samuel | R. | Cantril | spring brace for vehicles | 4 | 24 | 1883 |
| 1525366 | Brown | Newell | | Selma | hog ringing crate | 2 | 3 | 1925 |
| 1815545 | Brown | Newell | | Selma | hog ringing device | 7 | 21 | 1931 |
| 2512517 | Bruce | Robert | A. | Keosauqua | wire container having a wire stacking ring | 6 | 20 | 1950 |
| 2856093 | Bruce | Robert | A. | Keosauqua | wire carrying case | 10 | 14 | 1958 |
| 2860807 | Bruce | Robert | A. | Keosauqua | wire case having sheet metal bottom | 11 | 18 | 1958 |
| 2860808 | Bruce | Robert | A. | Keosauqua | wire case having sheet metal bottom | 11 | 18 | 1958 |
| D190887 | Bruce | Robert | A. | Keosauqua | cover for milk bottle carrier | 7 | 11 | 1961 |
| 2993615 | Bruce | Robert | A. | Keosauqua | interlocking bottle case | 7 | 25 | 1961 |
| 3014612 | Bruce | Robert | A. | Keosauqua | wire case construction | 12 | 26 | 1961 |
| 3071279 | Bruce | Robert | A. | Keosauqua | milk bottle carrier and enclosure | 1 | 1 | 1963 |
| 1486224 | Bruggeman | Carl | W. | Farmington | stock watering trough | 3 | 11 | 1924 |
| 1486224 | Bruggeman | Charles | W. | Farmington | stock watering trough | 3 | 11 | 1924 |
| 391836 | Burg | Lewis | | Farmington | road cart | 10 | 30 | 1888 |
| 376470 | Burg | Lewis | | Farmington | road cart | 1 | 17 | 1888 |
| 391835 | Burg | Lewis | | Farmington | shaft tug | 10 | 30 | 1888 |
| 443592 | Burg | Lewis | | Farmington | road cart | 12 | 30 | 1890 |
| 271218 | Byers | Eli | A. | Birmingham | hay elevator and carrier | 1 | 30 | 1883 |
| 5806106 | Carter | William | J. | Keosauqua | lever activated toilet seat lift | 9 | 15 | 1998 |
| 6683282 | Carter | William | J. | Keosauqua | food merchandiser and temperature control system | 1 | 27 | 2004 |
| 234753 | Casady | William | | Milton | wheel making machine | 11 | 23 | 1880 |
| 652551 | Chapman | Leo | M. | Benton's Port | rotary engine | 6 | 26 | 1900 |
| 357578 | Church | Alvin | T. | Farmington | sash holder | 2 | 15 | 1887 |
| 368651 | Church | Alvin | T. | Farmington | pen holder | 8 | 23 | 1887 |
| 71276 | Clark | Francis | O. | Benton's Port | stave machine | 11 | 26 | 1867 |
| 71277 | Clark | Francis | O. | Benton's Port | stave machine | 11 | 26 | 1867 |
| 46641 | Clark | N. | D. | Benton's Port | gold washer | 3 | 7 | 1865 |
| 548295 | Clayton | George | W. | Lebanon | car coupling | 10 | 22 | 1895 |
| 574191 | Clayton | George | W. | Lebanon | fence post | 12 | 29 | 1896 |
| 663417 | Clayton | George W. | | Lebanon | sheep dipping apparatus | 12 | 11 | 1900 |
| 1021136 | Collister | Lloyd | W. | Farmington | making calcimine | 3 | 26 | 1912 |
| 7607267 | Conley | Paul | | Birmingham | apparatus for venting of protective panels | 10 | 27 | 2009 |
| 358841 | Conner | William | R. | Milton | keyed musical tube | 3 | 8 | 1887 |
| 345771 | Countryman | George | W. | Birmingham | car coupling | 7 | 20 | 1886 |
| 420335 | Countryman | George | W. | Birmingham | sash fastener | 1 | 28 | 1890 |
| 1074492 | Countryman | George | W. | Birmingham | form for concrete culverts | 9 | 30 | 1913 |
| 1544221 | Countryman | John | V. | Selma | shingling bracket | 6 | 30 | 1925 |
| 1435107 | Cox | Alonzo | C. | Cantril | draft device for harrows | 11 | 7 | 1922 |
| 2076939 | Cox | Alonzo | C. | Cantril | earth moving machine | 4 | 13 | 1937 |
| 2089539 | Cox | Alonzo | C. | Cantril | scraper | 8 | 10 | 1937 |
| 2263120 | Cox | Alonzo | C. | Cantril | ground working implement | 11 | 18 | 1941 |
| 1175716 | Cox | Alonzo | C. | Keosauqua | steering mechanism for wheeled vehicles | 3 | 14 | 1916 |
| 1052041 | Cox | Ray | | Benton's Port | cylinder tooth | 2 | 4 | 1913 |
| 2824469 | Craig | Harold | B. | Keosauqua | chain saw servicing vice | 2 | 25 | 1958 |
| 2334387 | Curty | Frank | M. | Farmington | child's trailer | 11 | 16 | 1943 |
| 126683 | Custer | John | L. | Bonaparte | grain separator | 5 | 14 | 1872 |
| 217073 | Custer | John | L. | Bonaparte | ditching machine | 7 | 1 | 1879 |
| 1377187 | Dana | Earl | E. | Stockport | chain clasp | 5 | 10 | 1921 |
| 46548 | Dibble | C. | G. | Farmington | stave machine | 2 | 28 | 1865 |
| 1466523 | Donoho | Johnnie | E. | Milton | fabric stretching and clamping device | 8 | 28 | 1923 |
| 218504 | Doyle | Peter | C. | Vernon | sled brake | 8 | 12 | 1879 |
| 652760 | Engelbright | Frederick | A. | Farmington | gate | 7 | 3 | 1900 |
| 668986 | Englebright | Frederick | A. | Farmington | door hanger | 2 | 26 | 1901 |
| 763382 | Entler | Edwin | C. | Bonaparte | easel | 6 | 28 | 1904 |
| 514355 | French | Samuel | R. | Farmington | derrick | 2 | 6 | 1894 |
| 667306 | French | Samuel | R. | Farmington | hay stacker | 2 | 5 | 1901 |
| 879253 | French | Samuel | R. | Farmington | manure scraper and loader | 2 | 18 | 1908 |
| 2606395 | Fulton | Arthur | P. | Selma | bubble producing toy | 8 | 12 | 1952 |
| 646424 | Gentner | William | H. | Farmington | spool cabinet | 4 | 3 | 1900 |
| 667081 | Gentner | William | H. | Farmington | spool delivery cabinet | 1 | 29 | 1901 |
| 1394081 | Gentner | William | H. | Farmington | currency | 10 | 18 | 1921 |
| 350735 | George | David | W. | Milton | washing machine | 10 | 12 | 1886 |
| 2922 | Godden | John | | Pittsburg | breaking and cleaning flax and hemp | 1 | 20 | 1843 |
| 1287968 | Greenleaf | Pearl | I. | Farmington | reflector | 12 | 17 | 1918 |
| 833465 | Gregory | Silas | A. | Stockport | electrothermostatic fire alarm | 10 | 17 | 1906 |
| 2119279 | Grubbs | Robert | A. | Douds | grinding wheel | 5 | 31 | 1938 |
| 4094574 | Gunn | Thomas | L. | Bonaparte | coaxial cable connector device and method of manufacture thereof | 6 | 13 | 1978 |
| 789422 | Hagler | John | F. | Milton | automatic wagon brake | 5 | 9 | 1905 |
| 295386 | Hardisty | John | F. | Bonaparte | breast drill | 3 | 18 | 1884 |
| 68872 | Hart | J. | | Farmington | spinning machine | 9 | 17 | 1867 |
| 68872 | Hart | S. | | Farmington | spinning machine | 9 | 17 | 1867 |
| 308506 | Hill | Henry | C. | Milton | apparatus for painting wire fences | 11 | 25 | 1884 |
| 5806106 | Hodges | James | David | Keosauqua | lever activated toilet seat lift | 9 | 15 | 1998 |
| 7607267 | Holmberg | Rene | | Birmingham | apparatus for venting of protective panels | 10 | 27 | 2009 |
| 1858086 | House | Charlie | E. | Farmington | baker's proofing cabinet | 5 | 10 | 1932 |
| 80962 | Israel | J. | D. | Utica | fence post driver | 8 | 11 | 1868 |
| 1141800 | Jack | Lewis | T. | Mount Sterling | extended step | 6 | 1 | 1915 |
| 1146500 | Jack | Lewis | T. | Mount Sterling | gate hinge | 7 | 13 | 1915 |
| 449808 | Jackson | John | T. | Leando | wire stretcher | 4 | 7 | 1891 |
| 8969 | Johnston | George | | Farmington | worm tub for stills | 5 | 25 | 1852 |
| 182448 | Jones | J. | N. | Van Buren County | corn planter | 9 | 19 | 1876 |
| 182448 | Jones | William | | Van Buren County | corn planter | 9 | 19 | 1876 |
| 1310663 | Kepler | Clell | S. | Keosauqua | oiling device | 7 | 22 | 1919 |
| 1345601 | Kepler | Clell | S. | Keosauqua | cold pack cooking device | 7 | 6 | 1920 |
| 2119279 | Kerr | William | A. | Douds | grinding wheel | 5 | 31 | 1938 |
| 304828 | King | Frederick | W. | Farmington | balanced stack-roof | 9 | 9 | 1884 |
| 645363 | Kirkendall | Elijah | B. | Leando | road grading machine | 3 | 13 | 1900 |
| 1415247 | Knowles | Harve | Allen | Stockport | lumber jack saw | 5 | 9 | 1922 |
| 833465 | Knowles | Jesse | M. | Stockport | electrothermostatic fire alarm | 10 | 17 | 1906 |
| 7607267 | Kobelt | Clint | | Bonaparte | apparatus for venting of protective panels | 10 | 27 | 2009 |
| 917879 | Linn | George | A. | Cantril | wire stretcher | 4 | 13 | 1909 |
| 340952 | Loomis | Loira | C. | Doud's Station | neck yoke | 4 | 27 | 1886 |
| 946609 | Loomis | Loira | C. | Keosauqua | ditching and tile machine | 1 | 18 | 1910 |
| 84127 | Lowden | William | | Cedar Township | elevator | 11 | 17 | 1868 |
| 2547083 | Lundgren | Chester | L. | Bonaparte | extensible tire carrier | 4 | 3 | 1951 |
| 2643041 | Lundgren | Chester | L. | Bonaparte | spare tire mounting for automobiles | 6 | 23 | 1953 |
| 1933561 | Lunsford | Wesley | | Milton | grain separators | 11 | 7 | 1933 |
| 11382 | Lyon | John | | Harrisburg | ditching plow | 7 | 25 | 1854 |
| 1098591 | Lyons | Montraville | A. | Farmington | gate hinge | 6 | 2 | 1914 |
| 308506 | Marsau | Alonzo | L. | Milton | apparatus for painting wire fences | 11 | 25 | 1884 |
| 65101 | Mason | J. | Franklin | Benton's Port | bridle | 5 | 28 | 1867 |
| 29183 | Mayne | P. | T. | Keosauqua | excavating and grading machine | 7 | 17 | 1860 |
| 6230947 | McClaran | Robert | E. | Birmingham | bracket mounting device | 5 | 15 | 2001 |
| 1054928 | McFarland | Harvey | P. | Milton | gate hinge | 3 | 4 | 1913 |
| 1057972 | McFarland | Harvey | P. | Milton | hinge | 4 | 1 | 1913 |
| 1117214 | McFarland | Harvey | P. | Milton | watering device for stock cars | 11 | 17 | 1914 |
| 6683282 | McMahon | J. | Patrick | Keosauqua | food merchandiser and temperature control system | 1 | 27 | 2004 |
| 6683282 | McMahon | Timothy | L. | Keosauqua | food merchandiser and temperature control system | 1 | 27 | 2004 |
| 176029 | Metz | Benjamin | F. | Pittsburg | earth auger | 4 | 11 | 1876 |
| 53710 | Miller | Elias | | Milton | corn harvester | 4 | 3 | 1866 |
| 181587 | Miller | William | K. | Birmingham | earth boring machinery | 8 | 29 | 1876 |
| 93465 | Monson | C. | W. | Upton | leather rolling machine | 8 | 10 | 1869 |
| 1188303 | Moore | George | L. | Birmingham | gearing | 6 | 20 | 1916 |
| 868937 | Munson | Marion | J. | Stockport | tile ditching machine | 10 | 22 | 1907 |
| 712402 | Newman | George | T. | Bonaparte | telephone attachment | 10 | 28 | 1902 |
| 814982 | Nixon | Jacob | | Stockport | ditching machine | 3 | 13 | 1906 |
| 870247 | Nixon | Jacob | | Stockport | corn harvester | 11 | 5 | 1907 |
| 347886 | Norcross | Linnaeus | | Birmingham | stem winding watch | 8 | 24 | 1886 |
| 1028060 | Park | Orva | D. | Mount Sterling | road grading machine | 5 | 28 | 1912 |
| 2589526 | Parker | Ralph | B. | Keosauqua | sectionalized bottle carrier | 3 | 18 | 1952 |
| 1631429 | Parsons | Albert | R. | Bonaparte | telescoping tire rim | 6 | 7 | 1927 |
| 920172 | Parsons | Edward | J. | Mount Sterling | vapor burning lamp | 5 | 4 | 1909 |
| 836277 | Perjue | Ira | A. | Milton | molding mechanism | 11 | 20 | 1906 |
| 1085355 | Perkins | William | H. | Bonaparte | scraper | 1 | 27 | 1914 |
| 229178 | Phillips | Harley | | Winchester | washing machine | 6 | 22 | 1880 |
| 229178 | Phillips | Theodore | | Winchester | washing machine | 6 | 22 | 1880 |
| 553016 | Pittman | Clyde | L. | Cantril | apparatus for use in poultry houses | 1 | 14 | 1896 |
| 510933 | Pittman | Edward | F. | Cantril | device for applying wires to fence posts | 12 | 19 | 1893 |
| 688332 | Pittman | Edward | F. | Keosauqua | copy holder | 12 | 10 | 1901 |
| 716577 | Pittman | Edward | F. | Keosauqua | copy holder | 12 | 23 | 1902 |
| 853826 | Poulter | Micajah | L. | Stockport | fire alarm or temperature indicator | 5 | 14 | 1907 |
| 868937 | Poulter | Micajah | L. | Stockport | tile ditching machine | 10 | 22 | 1907 |
| 969187 | Poulter | Micajah | L. | Stockport | crumber | 9 | 6 | 1910 |
| 970548 | Poulter | Micajah | L. | Stockport | clutch | 9 | 20 | 1910 |
| 1109460 | Prail | George | A. | Keosauqua | scuttle ladder | 9 | 1 | 1914 |
| 69479 | Purviance | A. | J. | Keosauqua | operating horse hay forks | 10 | 1 | 1867 |
| 66388 | Purviance | A. | J. | Mount Zion | baling press | 7 | 2 | 1867 |
| 2005803 | Reel | Jesse | Kenneth | Cantril | toy fishing outfit | 6 | 25 | 1935 |
| 603739 | Rees | Harrison | | Farmington | corn planter | 5 | 10 | 1898 |
| 68872 | Reesman | J. | | Farmington | spinning machine | 9 | 17 | 1867 |
| 456432 | Roankles | John | W. | Farmington | carpet stretcher | 7 | 21 | 1891 |
| 771209 | Roberts | Oscar | L. | Stockport | sawing machine | 9 | 27 | 1904 |
| 214457 | Rogers | Jonathan | W. | Mount Sterling | chrun | 4 | 15 | 1879 |
| 422162 | Sanford | George | M. | Kilbourn | mowing machine | 2 | 25 | 1890 |
| 567866 | Schaeffer | Henry | | Farmington | car coupling | 9 | 15 | 1896 |
| 1126298 | Schee | Charles | E. | Farmington | hay press | 1 | 26 | 1915 |
| 1098591 | Schee | John | C. | Farmington | gate hinge | 6 | 2 | 1914 |
| 236846 | Schmitz | William | B. | Farmington | elevator roof for hay or grain | 1 | 18 | 1881 |
| 1389993 | Schulz | John | C. | Stockport | breeding crate | 9 | 6 | 1921 |
| 652551 | Seward | George | W. | Benton's Port | rotary engine | 6 | 26 | 1900 |
| 652551 | Seward | John | A. | Benton's Port | rotary engine | 6 | 26 | 1900 |
| 1486462 | Shackelford | Lincoln | | Bonaparte | furnace | 3 | 11 | 1924 |
| 83557 | Silvis | Anthony | W. | Birmingham | loom | 10 | 27 | 1868 |
| 75063 | Silvis | Anthony | W. | Birmingham | hand spinning machine | 3 | 3 | 1868 |
| 1758178 | Slinn | James | R. | Bonaparte | flying machine | 5 | 13 | 1930 |
| 1760787 | Slinn | James | B. | Bonaparte | airplane wing | 5 | 27 | 1930 |
| 5341954 | Smith | Bruce | A. | Bonaparte | product dispenser for a vending machine | 8 | 30 | 1994 |
| 151628 | Smith | Charles | Chapin | Bonaparte | car coupling | 6 | 2 | 1874 |
| 282790 | Smith | Lewis | T. | Cantril | revolving riddle for thrashing machines | 8 | 7 | 1883 |
| 152698 | Smith | Newton | H. | Bonaparte | stave sawing machine | 6 | 30 | 1874 |
| 740937 | Smith | Newton | H. | Bonaparte | chisel | 10 | 6 | 1903 |
| 449808 | Springer | Amos | W. | Leando | wire stretcher | 4 | 7 | 1891 |
| 607490 | Springer | Amos | W. | Leando | corner iron for vehicle bodies | 7 | 19 | 1898 |
| 58911 | St. John | Carlisle | | Keosauqua | plow | 10 | 16 | 1866 |
| 662174 | Stanley | James | C. | Birmingham | check row corn planter | 11 | 20 | 1900 |
| 962988 | Steinmeyer | Samuel | | Bonaparte | copy holder | 6 | 28 | 1910 |
| 6852023 | Stickels | Karen | K. | Douds | liner adaptor for chimneys | 2 | 8 | 2005 |
| 565812 | Stoddard | Merchant | | Farmington | ore concentrator | 8 | 11 | 1896 |
| 896480 | Swanson | Albert | J. | Stockport | automatic music leaf turner | 8 | 18 | 1908 |
| 970766 | Swanson | Albert | J. | Stockport | automatic music leaf turner | 9 | 20 | 1910 |
| 60098 | Swearingen | E. | P. | Milton | pump bellows | 11 | 27 | 1866 |
| 319038 | Teal | Furgerson | | Utica | apparatus for watering stock | 6 | 2 | 1885 |
| 1279938 | Teter | Lee | A. | Cantril | silage packer | 9 | 24 | 1918 |
| 608311 | Thayer | Julius | W. | Milton | cream separator | 8 | 2 | 1898 |
| 882220 | Truax | Benjamin | F. | Keosauqua | copy holder | 3 | 17 | 1908 |
| 63444 | Van Eps | C. | H. | Farmington | gate | 4 | 2 | 1867 |
| 1168983 | Wallingford | Henry | | Bonaparte | door bridge for railway cars | 1 | 18 | 1916 |
| 60098 | Wallis | J. | M. | Milton | bellows pump | 11 | 27 | 1866 |
| 53710 | Wallis | J. | M. | Milton | corn harvester | 4 | 3 | 1866 |
| 35793 | Wallis | James | M. | Milton | portable fence | 7 | 1 | 1862 |
| 36815 | Wallis | James | M. | Milton | hand corn planter | 10 | 28 | 1862 |
| 36815 | Wallis | W. | C. | Milton | hand corn planter | 10 | 28 | 1862 |
| 68918 | Wandel | Charles | | Milton | hand loom | 9 | 17 | 1867 |
| 2837760 | Ware | Dale | V. | Farmington | gate hinge | 6 | 10 | 1958 |
| 449303 | Warren | Samuel | H. | Keosauqua | feed rack | 3 | 31 | 1891 |
| 645149 | Warren | Samuel | H. | Keosauqua | watch chain | 3 | 13 | 1900 |
| 1933561 | Weiny | Elmer | | Milton | grain separators | 11 | 7 | 1933 |
| 900139 | Welch | Johnson | B. | Stockport | fishing device | 10 | 6 | 1908 |
| 208655 | West | Andrew | | Birmingham | station indicator | 10 | 1 | 1878 |
| 288898 | West | Andrew | | Birmingham | roundabout | 11 | 20 | 1883 |
| 900139 | Wheatley | Caleb | W. | Stockport | fishing device | 10 | 6 | 1908 |
| 645242 | Whitlock | Henry | | Farmington | cream separator | 3 | 13 | 1900 |
| 2014641 | Wray | James | R. | Cantril | container for holding and displaying automotive vehicle certificates or like | 9 | 17 | 1935 |
| 141974 | Wright | Harry | P. | Bonaparte | steam generator | 8 | 19 | 1873 |
| 1058134 | Zane | James | L. | Farmington | toe calk shears | 4 | 8 | 1913 |
| 124712 | Zeitler | Christopher | | Benton's Port | mechanical movement | 3 | 19 | 1872 |