| All Patents in class 91/355 |
Patents 1 -
10
of 15
      |
| Picture | Number | Date | Patentee | Title |
 | 17,914 | Aug. 04, 1857 | R. Brayton | Nut Machine |
 | 1,575,968 | Mar. 09, 1926 | W.L. Bryant | Grinding machine |
| | 1,740,744 | Dec. 24, 1929 | F.A. Parsons | Fluid Transmission and Control Means for Machine Tools |
| | 1,870,499 | Aug. 09, 1932 | W. Ernst | Hydraulically Operated Drop Hammer |
| | 1,895,710 | Jan. 31, 1933 | W. Ernst, H.F. MacMillin | Hydraulic Press |
| | 2,009,487 | Jul. 30, 1935 | R. Thoreson, W. Ernst | Hydraulic Press |
 | 2,148,348 | Feb. 21, 1939 | W.F. Groene, H.J. Siekmann | Turret lathe |
| | 2,157,946 | May 09, 1939 | R.D. Wortendyke | Infeed Cycle Control Mechanism for Grinding Machines |
| | 2,365,748 | Dec. 26, 1944 | F.W. Curtis | Hydraulic Circuit |
| | 2,388,832 | Nov. 13, 1945 | W.W. Criley | Control Mechanism |
