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 Hemp Brake
by John T. Gilman
1864
 Sugar Evaporator
by James High
1863
 Tire Bender
by Joseph Tomlinson
1873
 Design for a Pin
by Roy Kleineck
1943
 Denture Cleaner
by Brian James
1993
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PAT. #
|
NAME
|
TOWN
|
TITLE
|
DATE
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| 5986559 | Larson, Tad D. | Anamosa | infinitely adjustable position sensor with visual confirmation | 16 Nov 1999 |
| 6003387 | Larson, Tad D. | Anamosa | flow sensor for use on crop harvesting having two arms and a middle integrated portion extending in the flow path | 21 Dec 1999 |
| 356541 | Lasack, Adolf | Oxford Junction | hay loader | 25 Jan 1887 |
| 404096 | Lasack, Adolph | Oxford Junction | hay loader | 28 May 1889 |
| 428844 | Lasack, Adolph | Oxford Junction | hay loader | 27 May 1890 |
| 453492 | Lasack, Adolph | Oxford Junction | hay loader | 2 Jun 1891 |
| 453492 | Lasack, Albert | Oxford Junction | hay loader | 2 Jun 1891 |
| 1209309 | Lathrop, James H. | Oxford Junction | stock waterer | 19 Dec 1916 |
| 802868 | Laude, William H. | Monticello | rivet cutter | 24 Oct 1905 |
| 1018064 | Laude, William H. | Monticello | sod cutter | 20 Feb 1912 |
| 714493 | Lawrence, Joseph O. | Monticello | cultivator | 25 Nov 1902 |
| 4342406 | Lee, Gerry A. | Olin | dispenser flow proportioning device | 3 Aug 1982 |
| 1417845 | Leesekamp, Andrew | Anamosa | cask cover | 30 May 1922 |
| 1113451 | Levasseur, Clement C. | Martelle | rural mail delivery apparatus | 13 Oct 1914 |
| 380211 | Levasseur, John E. | Monticello | butter can | 27 Mar 1888 |
| 403054 | Levasseur, John E. | Monticello | butter can | 7 May 1889 |
| 241033 | Lewis, Alexander | Monticello | device for skimming milk | 3 May 1881 |
| 294644 | Liddy, Dennis H. | Monticello | coupling plate for whiffletrees | 4 Mar 1884 |
| 153580 | Linnell, J. M. | Monticello | sawing machines | 28 Jul 1874 |
| 203169 | Lunger, William W. | Anamosa | nut lock | 30 Apr 1878 |
| 205110 | Lunger, William W. | Anamosa | clip for neck yokes | 18 Jun 1878 |
| 37698 | Luther, Jacob | Walnut Fork | water wheel | 17 Feb 1863 |
| 2885097 | Lyon, Donald G. | Monticello | automatic pallet loader | 5 May 1959 |
| 3022905 | Lyon, Donald G. | Monticello | unloader apparatus for stacked articles or the like | 27 Feb 1962 |
| 354562 | Matthews, Cyrus | Anamosa | bread toaster | 21 Dec 1886 |
| 1012393 | Matthews, John H. | Monticello | wire stretcher | 19 Dec 1911 |
| 1095997 | Matthews, John H. | Monticello | woven wire clamp | 5 May 1914 |
| 5425305 | Mauritz, Forrest | Monticello | hydraulic cylinder piston with center flow bypass valve | 20 Jun 1995 |
| 6170383 | Mauritz, Forrest | Monticello | piston bypass valve | 9 Jan 2001 |
| 44642 | McClure, B. W. | Wyoming | horse collar block | 11 Oct 1864 |
| 88400 | McClure, B. W. | Wyoming | horse collar | 30 Mar 1869 |
| 206119 | McGinty, Edward H. | Center Junction | car coupling | 16 Jul 1878 |
| 3132833 | McLaughlin, James N. | Monticello | jack | 12 May 1964 |
| 3167055 | McLaughlin, James N. | Monticello | animal actuated insecticide applicator | 26 Jan 1965 |
| 206119 | Mead, Francis | Center Junction | car coupling | 16 Jul 1878 |
| 2942835 | Meyer, Lester E. | Olin | automatic weigher for cattle feed | 28 Jun 1960 |
| 2942836 | Meyer, Lester Ernest | Olin | automatic weigher for cattle feed and the like | 28 Jun 1960 |
| 1320887 | Michels, Charles Sr. | Anamosa | chimney cleaner and safety device | 4 Nov 1919 |
| 308783 | Milne, Hector A. | Monticello | capstan for stump extractors | 2 Dec 1884 |
| 308783 | Milne, James J.J. | Monticello | capstan for stump extractors | 2 Dec 1884 |
| 330722 | Milne, James | Scotch Grove | device for coupling rope | 17 Nov 1885 |
| 474675 | Milne, James | Scotch Grove | rope hook | 10 May 1892 |
| 475333 | Milne, James | Scotch Grove | stump puller | 24 May 1892 |
| 330722 | Milne, Joseph J. | Scotch Grove | device for coupling rope | 17 Nov 1885 |
| 1275070 | Moncrief, Sherman | Center Junction | broom holder | 6 Aug 1918 |
| 1195492 | Moore, V. Charles | Monticello | envelop | 22 Aug 1916 |
| 1113451 | Morris, Daniel M. | Martelle | rural mail delivery apparatus | 13 Oct 1914 |
| 1379712 | Munkel, Walter G. | Anamosa | flush tank and flush valve therefor | 31 May 1921 |
| 1451430 | Munkel, Walter G. | Anamosa | toilet hopper | 10 Apr 1923 |
| 946765 | Myers, Josiah | Anamosa | mop ringer | 18 Jan 1910 |
| 333363 | Nash, Amasa W. | Garfield | spring bed | 29 Dec 1885 |
| 744094 | Netcott, George A. | Monticello | fire escape | 17 Nov 1903 |
| 1173456 | Neumann, John F. | Anamosa | target | 29 Feb 1916 |
| 772251 | NIchols, John H. | Anamosa | flue stop | 11 Oct 1904 |
| 82341 | Nicholson, J. S. | Anamosa | clothes press | 22 Sep 1868 |
| 4499908 | Niehaus, Frederick D. | Martelle | combine concave structure | 19 Feb 1985 |
| 3336786 | Norlin, Carmen L. | Monticello | bicycle repair tool | 22 Aug 1967 |
| 437199 | Oliver, Thomas | Monticello | can handle | 30 Sep 1890 |
| 450107 | Oliver, Thomas | Monticello | type writing machine | 7 Apr 1891 |
| 3866756 | Oltman, Fay W. | Anamosa | pen stand | 18 Feb 1975 |
| 3856420 | Oltmann, Fay W. | Anamosa | extended life pen | 24 Dec 1974 |
| 153013 | Page, Dexter | Monticello | earth augers | 14 Jul 1874 |
| 1117081 | Parker, Frank L. | Anamosa | rerailing device | 10 Nov 1914 |
| 2599935 | Pasker, Gerald J. | Monticello | hydraulic line coupling | 10 Jun 1952 |
| 2849255 | Pasker, Gerald J. | Monticello | hoist mechanism for dump trucks | 26 Aug 1958 |
| 3236189 | Pasker, Gerald J. | Monticello | variable delivery piston pump | 22 Feb 1966 |
| 447199 | Paul, Lawrence H. | Wyoming | return pulley | 24 Feb 1891 |
| 4502414 | Paulsen, Nick E. | Center Junction | farrowing pen | 5 Mar 1985 |
| 1457265 | Peck, Leland E. | Wyoming | press | 29 May 1923 |
| 1241145 | Peet, Truman J. | Monticello | crimping machine | 25 Sep 1917 |
| 1610582 | Pegariek, George | Oxford Junction | hay wagon | 14 Dec 1926 |
| 1546507 | Pegorik, Anthony | Oxford Junction | pump attachment | 21 Jul 1925 |
| 245973 | Pelton, Phineas | Martelle | car coupling | 23 Aug 1881 |
| 382007 | Pierce, Charles | Monticello | belt tightener | 1 May 1888 |
| 25671 | Pierce, Seneca | Castle Grove | tanning composition | 4 Oct 1859 |
| 611354 | Podhaski, Frank M. | Monticello | vending machine | 27 Sep 1898 |
| 373305 | Quigley, William F. | Anamosa | felt boot | 15 Nov 1887 |
| 197663 | Quinby, Levi C. | Monticello | feather renovator | 27 Nov 1877 |
| 208635 | Quinby, Levi C. | Monticello | metallic harness loop | 1 Oct 1878 |
| 250350 | Quinby, Levi C. | Monticello | bosom board | 6 Dec 1881 |
| 622538 | Rice, Samuel J. | Scotch Grove | stock rack for platform scales | 4 Apr 1899 |
| 5632153 | Ricklefs, Raymond E. | Anamosa | system and process for cleansing brine in a food-chilling circuit | 27 May 1997 |
| 5331919 | Root, John | Anamosa | medication scheduling device | 26 Jul 1994 |
| 118975 | Ross, Oliver B. | Bowen’s Prairie | grain binder | 12 Sep 1871 |
| 201838 | Ross, Oliver B. | Monticello | gang cheese press | 26 Mar 1878 |
| 5878995 | Rundle, Paul E. | Wyoming | lifting device for concrete mixer vehicle drum | 9 Mar 1999 |
| 1492483 | Ryan, Charles W. | Anamosa | roof bracket | 29 Apr 1924 |
| 210150 | Rynerson, Robert A. | Bowen’s Prairie | combined land roller and clod crusher | 19 Nov 1878 |
| 88416 | Sackett, Matthew | Monticello | broadcast seeder | 30 Mar 1869 |
| 640594 | Sanford, Delano | Scotch Grove | crank wheel | 2 Jan 1900 |
| 6161650 | Sauser, Edwin J. | Monticello | lubricating system for a vibratory apparatus | 19 Dec 2000 |
| 107294 | Sawyer, Eli | Madison | marking attachment to corn planters | 13 Sep 1870 |
| 4165184 | Schlarmann, Philip J. | Scotch Grove | apparatus for asphaltic concrete hot mix recycling | 21 Aug 1979 |
| 4318619 | Schlarmann, Philip J. | Scotch Grove | method of and apparatus for asphaltic concrete hot mix recycling | 9 Mar 1982 |
| 1244904 | Scott, Addie G. | Anamosa | automobile garment | 30 Oct 1917 |
| 196543 | Scriven, Oliver G. | Langworthy | milking stool | 30 Oct 1877 |
| 522622 | Sears, George | Onslow | power shears | 10 Jul 1894 |
| 540275 | Sears, George | Onslow | combined punching, shearing, and tire upsetting machine | 4 Jun 1895 |
| 643167 | Sears, George | Onslow | combined punching, shearing, and plow welding machine | 13 Feb 1900 |
| 721841 | Sears, William T. | Onslow | metal working machine | 3 Mar 1903 |
| 900213 | Sears, William T. | Onslow | cutting, punching, and tire shrinking machine | 6 Oct 1908 |
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