| All Patents in class 280/7 |
Patents 1 -
15
of 19
      |
| Number | Date | Patentee | Title | Type |
| 16,937 | Mar. 31, 1857 | D.B. Spencer | Steam Plow | steam plows |
| 123,395 | Feb. 06, 1872 | J. Greenslade | Improvements in Traction Engines | steam traction engines |
| 230,297 | Jul. 20, 1880 | J.B. Roush, D. Lippy | Traction Engine | steam traction engines |
| 258,683 | May 30, 1882 | E.J. Taylor | Traction Engine | steam traction engines |
| 264,500 | Sep. 19, 1882 | A.L. Wilson, T.F. Wilson | Device for Leveing Boilers of Road Engines | traction engine suspensions |
| 270,999 | Jan. 23, 1883 | C.L. Pagenhart, E.J. Taylor | Road Engine | steam road engines |
| 291,075 | Jan. 01, 1884 | W.S. Ownings | Traction Engine | traction engine suspensions |
| 300,271 | Jun. 10, 1884 | H.B. Larzelere | Traction Engine | traction engine suspensions |
| 354,605 | Dec. 21, 1886 | T.A. Long | Portable or Traction Engine | traction engine suspensions |
| 415,496 | Nov. 19, 1889 | E.E. Callahan | Traction Engine | traction engine suspensions |
| 428,837 | May 27, 1890 | J.L. Freeman, W.H. Freeman | Boiler Leveler | traction engine suspensions |
| 436,267 | Sep. 09, 1890 | F. Saxon | Boiler Leveling Device for Road Engines | traction engine boiler leveling apparatus |
| 442,777 | Dec. 16, 1890 | O.O. Kravik | Boiler Leveler | portable steam engines |
| 506,691 | Oct. 17, 1893 | W.R. Hitchcock | Leveler for Road Engines | traction engine suspensions |
| 545,287 | Aug. 27, 1895 | W.C. Hancock | Leveling Machine | traction engine suspensions |
