| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for John Humphreys | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 41,704 | Feb. 23, 1864 | J. Humphreys | Improvement in Turning Bayonet-Sockets | metal lathes | |
| 83,774 | Nov. 03, 1868 | J. Humphreys | Improved Adjustable Gearing for Lathes | engine lathes | |
| 89,483 | Apr. 27, 1869 | J. Humphreys | Improvement in bench-hooks | workbench devices | |