| All Patents in class 91/380 |
Patents 1 -
9
of 9
      |
| Picture | Number | Date | Patentee | Title |
 | 594,632 | Nov. 30, 1897 | N. Lombard | Speed Regulator |
| | 695,464 | Mar. 18, 1902 | N. Lombard | Speed Regulator |
| | 2,068,889 | Jan. 26, 1937 | E.G. Roehm | Milling and Profiling Machine |
| | 2,137,462 | Nov. 22, 1938 | M. Romaine | Index Head |
| | 2,412,549 | Dec. 10, 1946 | T.S. Armandroff, E.W. Yates | Automatic Pattern Controlled Milling Machine |
| | 2,994,304 | Aug. 01, 1961 | W. Shultz | Hydraulic Servo Drive System for Machine Tool Elements and the Like |
| | 3,139,005 | Jun. 30, 1964 | W.I. Evans | Velocity Error Compensating Device |
| | 3,315,569 | Apr. 25, 1967 | L.A. Dever | Control Mechanism for Machine Tool |
| | 3,596,569 | Aug. 03, 1971 | J.D. Wisbey | Valve for a Closed-Loop Hydraulic Torque Amplifier |
