| All Patents in class 180/39 |
Patents 16 -
29
of 29
      |
| Number | Date | Patentee | Title | Type |
| 310,980 | Jan. 20, 1885 | F.W. Bohn | Traction Engine | steam traction engines |
| 357,036 | Feb. 01, 1887 | C. Roberts | Traction Engine | steam traction engines |
| 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 |
| 492,303 | Feb. 21, 1893 | G.D. Lowry | Traction Engine | traction engine suspensions |
| 506,691 | Oct. 17, 1893 | W.R. Hitchcock | Leveler for Road Engines | traction engine suspensions |
| 622,729 | Apr. 11, 1899 | A. Stutzman | Traction Engine | steam traction engines |
| 647,397 | Apr. 10, 1900 | R. Gascoigne | Apparatus for Leveling Boilers of Road Locomotives | traction engine boiler leveling apparatus |
| 649,594 | May 15, 1900 | F.W. Bohn | Traction Engine | traction engine boiler leveling apparatus |
| 731,545 | Jun. 23, 1903 | N. Cernatesco | Motor Road Vehicle | internal combustion traction engines |
| 744,728 | Nov. 24, 1903 | O.A. Gordon, C.S. Doney | Traction Engine | steam traction engines |
| 1,084,069 | Jan. 13, 1914 | R.C. Mahagan, L.C. Claitor | Traction Engine | steam traction engines |
| 2,728,403 | Dec. 27, 1955 | J.F. Joy | Mine Transport Vehicle | mining vehicles |
