| All Patents in class 76/31 |
Patents 16 -
30
of 96
      |
| Number | Date | Patentee | Title | Type |
| 18,378 | Oct. 13, 1857 | A.M. Beardsley | Saw-filer | saw sharpening machines |
| 23,655 | Apr. 19, 1859 | A.M. Beardsley | Machine for filing saws | saw sharpening machines |
| 24,309 | Jun. 07, 1859 | T.E. King | Saw-filing machine | saw sharpening machines |
| 27,937 | Apr. 17, 1860 | J.S. Tripp | Saw-filer | saw sharpening machines |
| 35,935 | Jul. 22, 1862 | G.F. Hawley | Improvement in machines for filing saws | saw sharpening machines |
| 43,698 | Aug. 02, 1864 | J.S. McCune | Improvement in saw-filing machines | saw sharpening machines |
| 44,504 | Oct. 04, 1864 | N.G. Barnum | Improved machine for filing saws | saw sharpening machines |
| 51,168 | Nov. 28, 1865 | C.P. Frazer | Mode of sharpening saws | saw sharpening machines |
| 54,709 | May 15, 1866 | C.P. Frazer, C.C. Hinchman | Improved saw-filing machine | saw sharpening machines |
| 60,237 | Dec. 04, 1866 | M.M. Pettes | Improved machine for filing saw-teeth | saw sharpening machines |
| 61,277 | Jan. 15, 1867 | E. Stubbs | Improvement in machines for filing saws | saw sharpening machines |
| 71,302 | Nov. 26, 1867 | P. Hatch | Improvement in saw-filing machine | saw sharpening machines |
| 80,141 | Jul. 21, 1868 | H. Clendenen | Improvement in saw-filing machines | saw sharpening machines |
| 81,035 | Aug. 11, 1868 | J. Temple | Improvement in saw-filing machine | saw sharpening machines |
| 83,168 | Oct. 20, 1868 | D.H. Iseminger | Improvement in saw-filing machines | saw sharpening machines |
