| All Patents in class 91/274 |
Patents 1 -
8
of 8
      |
| Picture | Number | Date | Patentee | Title |
 | 10,276 | Nov. 29, 1853 | R.R. Taylor | Arrangement of valves, ports, and passages for operating steam-hammers |
| | 16,515 | Jan. 27, 1857 | S.P. Francisco, P.L. Weimer | Steam Hammer |
 | 50,320 | Oct. 10, 1865 | J.M. Albertson | Improvement in cut-off valves |
| | 72,714 | Dec. 31, 1867 | W. Ball | Steam Engine |
| | 433,200 | Jul. 29, 1890 | W.H. Millward, W. Foster | Steam Actuated Valve |
| | 1,785,455 | Dec. 16, 1930 | H.G. Mueller | Steam Engine |
| | 2,235,085 | Mar. 18, 1941 | H. Fritschi, E.G. Roehm | Milling Machine Transmission and Control Mechanism |
 | 3,060,466 | Oct. 30, 1962 | A.G. Kozacka | Controls for turret lathes and the like |
