| All Patents in class 76/21 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 8,199 | Jul. 01, 1851 | J. Crum | Machinery for Cutting Files | tool making machines |
| 14,189 | Feb. 05, 1856 | M.A. Fisher | File Cutter | files |
| 15,867 | Oct. 07, 1856 | M.D. Wipple | Cutting Round Files | files |
| 22,329 | Dec. 14, 1858 | G.W. Fogg | File-cutting machine | tool making machines |
| 237,350 | Feb. 01, 1881 | A. Weed | Chisel-holder for file-cutting machine | file cutting machines |
| 499,621 | Jun. 13, 1893 | A. Weed | Cutter-head for rasp-punching machine | file cutting machines |
| 1,063,076 | May 27, 1913 | O.G. Simmons | File | making files |
