| All Patents in class 91/181 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 21,789 | Oct. 12, 1858 | W. Wells | Reciprocating Steam Engine | steam engines |
| 128,062 | Jun. 18, 1872 | C.W. Patten | Improvment in Rotary Steam-Engines | rotary steam engines |
| 403,714 | May 21, 1889 | R.T. Abell | Steam Engine | oscillating steam engines |
| 414,045 | Oct. 29, 1889 | E. Huber | Steam Engine | steam traction engines |
| 2,620,631 | Dec. 09, 1952 | J.A. Denton | Control mechanism for lumber edger press rollers | sawmill accessories |
| 2,791,885 | May 14, 1957 | B. Sassen | Hydraulic Tracer Control | hydraulic apparatus |
