| All Patents in class 451/157 |
Patents 1 -
10
of 13
      |
| Picture | Number | Date | Patentee | Title |
| | 908,462 | Jan. 05, 1909 | J.P. Hedstrom | Oscillating mechanism for lap-grinding machines |
 | 1,104,589 | Jul. 21, 1914 | F.A. Ward, W.N. Taylor | Gear-grinding machine |
| | 1,189,557 | Jul. 04, 1916 | F.N. Gardner, F.E. Gardner | Grinding-machine |
| | 1,732,560 | Oct. 22, 1929 | A.M. Johnson | Honing machine |
| | 1,840,231 | Jan. 05, 1932 | F.S. Haas, R.E. Harrison | Grinding Machine |
| | 1,849,868 | Mar. 15, 1932 | S. Einstein | Grinder Wheel Oscillator |
| | 2,163,443 | Jun. 20, 1939 | A.C. Abrams | Grinding Wheel Reciprocating Mechanism |
| | 2,242,781 | May 20, 1941 | V.W. Gideon | Grinding Machine |
 | 2,426,028 | Aug. 19, 1947 | A.F. Krueger | Sanding machine |
| | 2,960,804 | Nov. 22, 1960 | S.G. Brady | Machine for Grinding the Back-Off from the Cutting Edges of Tools of the Broach Type |
