| All Patents in class 91/262 |
Patents 1 -
10
of 11
      |
| Picture | Number | Date | Patentee | Title |
 | 22,200 | Nov. 30, 1858 | R. Porter | Steam-engine |
| | 31,335 | Feb. 05, 1861 | W. Smith | Steam Engine Valve Gear |
 | 61,141 | Jan. 15, 1867 | L.D. Bartlett | Improvement in valves of steam engines |
 | 108,576 | Oct. 25, 1870 | P. Estes | Reciprocating Engine |
 | RE4,279 | Feb. 28, 1871 | P. Estes | Improvement in Steam Engines |
| | 748,931 | Jan. 05, 1904 | G.F. Conner | Valve Gear for Engines |
| | 1,927,525 | Sep. 19, 1933 | H.G. Mueller | Reversing Valve Gear |
| | 1,927,527 | Sep. 19, 1933 | H.G. Mueller | Valve Gear |
| | 2,363,812 | Nov. 28, 1944 | J.L. Skinner | Engine Control Mechanism |
| | 2,630,788 | Mar. 10, 1953 | H.G. Mueller | Valve Operating Mechanism for Controlling the Steam Events in Steam Engines |
