| All Patents in class 91/246 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 93,125 | Jul. 27, 1869 | C.E. Rymes | Valve gear for rotary valves | steam engine valve gear |
| 257,994 | May 16, 1882 | D. Farquhar, R.W. Aitken | Valve Gear for Steam Engines | steam engine valve gear |
| 552,152 | Dec. 31, 1895 | J.B. Stanwood | Valve-gear for steam-engines | steam engine valve gear |
| 1,244,664 | Oct. 30, 1917 | H.E. Warren | Fluid-operated lathe | metal lathes |
| 1,425,631 | Aug. 15, 1922 | H.C. Clay | Valve Gear Mechanism | traction engine valve gear |
| 2,303,639 | Dec. 01, 1942 | R.D. Wortendyke, C. Herfurth | Grinding Machine | grinding machines |
