| All Patents in class 74/390 |
Patents 16 -
21
of 21
      |
| Number | Date | Patentee | Title | Type |
| 744,728 | Nov. 24, 1903 | O.A. Gordon, C.S. Doney | Traction Engine | steam traction engines |
| 806,947 | Dec. 12, 1905 | C.O. Wyman | Running Gear for Traction Engines | traction engine propulsion components |
| 941,145 | Nov. 23, 1909 | J.B. Hill | Ditching-Machine | ditching machines |
| 1,142,357 | Jun. 08, 1915 | R.A. Norling | Transmission gearing | handheld power drills |
| 1,217,284 | Feb. 27, 1917 | D.P. Davies | Drive Mechanism for Traction Engines | traction engine propulsion components |
| 1,268,783 | Jun. 04, 1918 | L. Mayer, E.A. Bye | Gearing for tractors | tractors |
