| All Patents in class 91/376R |
Patents 1 -
8
of 8
      |
| Picture | Number | Date | Patentee | Title |
| | 518,197 | Apr. 10, 1894 | A.J. Moxham | Machine for Straightening Rails or Other Metal Bars |
| | 2,016,931 | Oct. 08, 1935 | C.C. Richard | Hydraulic Mechanism for Determining the Path of Movement of a Tool or Other Element |
| | 2,464,626 | Mar. 15, 1949 | A.P. Waterson | Pilot Operated Servo Valve |
| | 2,474,134 | Jun. 21, 1949 | A.P. Waterson | Hydraulic Tool Control Unit |
 | 2,475,326 | Jul. 05, 1949 | C. Johnson | Control system |
 | 2,516,495 | Jul. 25, 1950 | A.P. Waterson | Hydraulic tool control unit |
| | 2,535,957 | Dec. 26, 1950 | E.G. Roehm, M. Romaine | Precision Positioning Mechanism |
| | 2,618,244 | Nov. 18, 1952 | E.G. Roehm | Pilot Valve Controlled Tracer Valve |
