| All Patents in class 91/275 |
Patents 1 -
10
of 12
      |
| Picture | Number | Date | Patentee | Title |
| | 627,385 | Jun. 20, 1899 | J. Brockie | Automatic Lathe |
| | 1,125,204 | Jan. 19, 1915 | R.C. Stevens | Engine Valve Gear |
| | 1,840,231 | Jan. 05, 1932 | F.S. Haas, R.E. Harrison | Grinding Machine |
| | 1,938,762 | Dec. 12, 1933 | F.S. Haas | Grinding Machine |
| | 2,009,487 | Jul. 30, 1935 | R. Thoreson, W. Ernst | Hydraulic Press |
| | 2,051,052 | Aug. 18, 1936 | E.K. Morgan | Machine Tool Hydraulic Control System |
| | 2,247,479 | Jul. 01, 1941 | H.J. Caldwell | Honing machine |
 | 2,442,635 | Jun. 01, 1948 | R.D. Bennett | Spline or gear grinder |
| | 2,470,415 | May 17, 1949 | E.Y. Seborg | Drive mechanism |
| | 2,775,235 | Dec. 25, 1956 | W.F. Jessup | Booster for Template Controlled Truing Mechanism |
