| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 91/254 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 16,781 | Mar. 10, 1857 | J.F. Allen | Improvement in cut-offs for steam-engines | steam engine valve gear | |
| 212,285 | Feb. 11, 1879 | N.W. Twiss | Improvement in cut-off gearing | steam engine valve gear | |
| 247,588 | Sep. 27, 1881 | N.W. Twiss | Automatic cut-off | steam engine valve gear | |
| 350,172 | Oct. 05, 1886 | N.W. Twiss | Valve-gear | steam engine valve gear | |