| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 91/252 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 7,350 | May 07, 1850 | C. Richardson | Steam Engine Valve Gear | steam engine valve gear | |
| 65,470 | Jun. 04, 1867 | P. Bloomsburg, Jr., J. Molyneux | Rotary valve for steam engines | steam engine valve gear | |
| 262,476 | Aug. 08, 1882 | E. Reynolds | Valve Gear for Compound Engines | steam engine valve gear | |
| 552,152 | Dec. 31, 1895 | J.B. Stanwood | Valve-gear for steam-engines | steam engine valve gear | |
| 1,125,204 | Jan. 19, 1915 | R.C. Stevens | Engine Valve Gear | steam engine valve gear | |