| All Patents in class 76/20 |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 8,199 | Jul. 01, 1851 | J. Crum | Machinery for Cutting Files | tool making machines |
| 16,681 | Feb. 24, 1857 | I.H. Coller | File-cutting machine | tool making machines |
| 22,842 | Feb. 01, 1859 | M.D. Whipple | Machine for cutting files | making files |
| 42,217 | Apr. 05, 1864 | W.T. Nicholson | Improvement in File Cutting Machines | tool making machines |
| 46,865 | Mar. 14, 1865 | A. Weed | Machine for cutting files | file cutting machines |
| 239,412 | Mar. 29, 1881 | A. Weed | File-cutting machine | file cutting machines |
| 293,591 | Feb. 12, 1884 | F. Outram | Sliding Bed for Machinery | metalworking machine mechanisms |
| 323,874 | Aug. 04, 1885 | H.F. Liebmann | File-cutting machine | tool making machines |
| 424,053 | Mar. 25, 1890 | C.M. Fairbanks | Machine for Cutting Files | files |
| 530,143 | Dec. 04, 1894 | A. Weed | Machine for stripping file-blanks | file cutting machines |
| 660,604 | Oct. 30, 1900 | J. Turner | Rasp Cutting Machine | tool making machines |
