| All Patents in class 91/37 |
Patents 1 -
15
of 37
      |
| Number | Date | Patentee | Title | Type |
| 627,385 | Jun. 20, 1899 | J. Brockie | Automatic Lathe | automatic lathes |
| 1,840,231 | Jan. 05, 1932 | F.S. Haas, R.E. Harrison | Grinding Machine | grinding machines |
| 1,952,230 | Mar. 27, 1934 | G.V. Anderson | Automatic Profile Milling Machine | milling machines |
| 1,997,892 | Apr. 16, 1935 | E.L. Wall | Duplicating Machine | milling machine accessories |
| 2,016,931 | Oct. 08, 1935 | C.C. Richard | Hydraulic Mechanism for Determining the Path of Movement of a Tool or Other Element | hydraulic apparatus |
| 2,101,712 | Dec. 07, 1937 | E.K. Johansen | Tracer Mechanism for Duplicating Machines | metalworking machine mechanisms |
| 2,154,718 | Apr. 18, 1939 | T.W. Bannon | Duplicating Machine | metal shapers |
| 2,412,549 | Dec. 10, 1946 | T.S. Armandroff, E.W. Yates | Automatic Pattern Controlled Milling Machine | milling machines |
| 2,464,626 | Mar. 15, 1949 | A.P. Waterson | Pilot Operated Servo Valve | metalworking machine mechanisms |
| 2,473,572 | Jun. 21, 1949 | E.A. Ruchty, N.D. Cooper | Magnetic Servo Operator | metalworking machine mechanisms |
| 2,474,134 | Jun. 21, 1949 | A.P. Waterson | Hydraulic Tool Control Unit | metalworking machine mechanisms |
| 2,475,326 | Jul. 05, 1949 | C. Johnson | Control system | milling machine accessories |
| 2,516,495 | Jul. 25, 1950 | A.P. Waterson | Hydraulic tool control unit | metal lathe accessories and attachments |
| 2,535,957 | Dec. 26, 1950 | E.G. Roehm, M. Romaine | Precision Positioning Mechanism | metalworking machine mechanisms |
| 2,602,437 | Jul. 08, 1952 | W.L. Tancred | Hydraulic Profiler for Truing Devices and the Like | hydraulic apparatus |
