| All Patents in class 451/387 |
Patents 1 -
10
of 21
      |
| Picture | Number | Date | Patentee | Title |
| | 409,337 | Aug. 20, 1889 | E.B. Rich | Machine for grinding knives and saws |
| | 465,478 | Dec. 22, 1891 | A. Johnston | Grinding Machine |
 | 630,325 | Aug. 08, 1899 | H.W. Cheney | Bevel-gear-generating machine |
 | 953,031 | Mar. 29, 1910 | J. Hausman, J.C. Blevney | Grinding and polishing machine |
 | 957,783 | May 10, 1910 | C.L. Libby | Tool-support for lathes |
| | 1,666,500 | Apr. 17, 1928 | N.I. Lundberg | Metal Working Tool |
| | 1,753,590 | Apr. 08, 1930 | F.K. Benedict | Workholder for bar-grinding machines |
 | 1,894,010 | Jan. 10, 1933 | H.E. Tautz | Work-holding means for gauges |
| | 1,979,140 | Oct. 30, 1934 | L.G. Casey | Cutting-off machine |
 | 2,069,097 | Jan. 26, 1937 | P.H. Root | Knife grinder |
