| Patents for William T. Nicholson |
Patents 16 -
23
of 23
      |
| Number | Date | Patentee | Title | Type |
| 177,075 | May 09, 1876 | W.T. Nicholson | Machines for Cutting Files | file cutting machines |
| 191,811 | Jun. 12, 1877 | W.T. Nicholson | Improvement in File Holders | files |
| 198,668 | Dec. 25, 1877 | W.T. Nicholson | Improvement in Butchers' Steels | |
| 198,777 | Jan. 01, 1878 | W.T. Nicholson | File Handle | tool handles |
| 200,218 | Feb. 12, 1878 | W.T. Nicholson | File Cleaner | files |
| 204,596 | Jun. 04, 1878 | W.T. Nicholson | Improvement in File Holders | files |
| 265,975 | Oct. 17, 1882 | W.T. Nicholson | Forming Teeth Upon File Banks and Apparatus Therefor | tool making machines |
| 296,439 | Apr. 08, 1884 | W.T. Nicholson | Machine for Forming Teeth Upon File Blanks | file cutting machines |
