| Patents for Nelson W. Twiss |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 118,938 | Sep. 12, 1871 | N.W. Twiss, H.R. Hill | Improvement in lathes | pattern lathes |
| 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 |
| 356,512 | Jan. 25, 1887 | N.W. Twiss | Valve-gearing | steam engine valve gear |
| 473,486 | Apr. 26, 1892 | N.W. Twiss | Steam-engine valve | steam engine valve gear |
| 1,006,808 | Oct. 24, 1911 | N.W. Twiss | Liberating Cut-Off-Valve Gear | steam engine valve gear |
