| All Patents in class 172/754 |
Patents 16 -
26
of 26
      |
| Number | Date | Patentee | Title | Type |
| 7,203X | Aug. 17, 1832 | J. Weaver | Self sharpening plough | plows |
| 7,338X | Dec. 28, 1832 | J. Buch | Plough | plows |
| 7,727X | Aug. 23, 1833 | C.B. Taylor | Plough | plows |
| 7,729X | Aug. 26, 1833 | E. Kelly | Plough | plows |
| 9,474X | Mar. 04, 1836 | D. Prouty, J. Mears | Plough | auxiliary wrenches |
| 9,701X | Jun. 02, 1836 | J. Plank | Plough | plows |
| 9,731X | Jun. 16, 1836 | J. Gibbs | Plough | plows |
| 9,894X | Jul. 02, 1836 | I. Snider | Plough | plows |
| RE72 | Jul. 30, 1845 | E. L'Hommedieu | Improvement in machinery for manufacturing double-twist screw-augers | drill bits |
| RE1,706 | Jun. 21, 1864 | F.F. Smith | Making Plow Plates | plows |
| 150,524 | May 05, 1874 | J.C. Butterfield | Improvement in plow-beams | plows |
