| All Patents in class 91/417R |
Patents 1 -
15
of 17
      |
| Number | Date | Patentee | Title | Type |
| 503,975 | Aug. 29, 1893 | E.S. Matthews | Hydraulic valve-gear | |
| 646,458 | Apr. 03, 1900 | H.A. Pedrick | Pneumatic Hoisting Apparatus | hoists, winches, come-alongs |
| 649,357 | May 08, 1900 | W.H. Ridgway | Hoisting apparatus | hoists, winches, come-alongs |
| 675,112 | May 28, 1901 | R.A. Rutherford | Pneumatic Hoisting Apparatus | hoists, winches, come-alongs |
| 675,528 | Jun. 04, 1901 | R.A. Rutherford | Valve Device for Pneumatic Hoists | industrial valves |
| 1,234,882 | Jul. 31, 1917 | W.A. Doble | Speed Governor | water wheel governors |
| 1,481,642 | Jan. 22, 1924 | F.A. Jimerson | Combination riveter | impact riveters |
| 1,895,710 | Jan. 31, 1933 | H.F. MacMillin, W. Ernst | Hydraulic Press | hydraulic presses |
| 1,899,678 | Feb. 28, 1933 | R. Thoreson, H.F. MacMillin, W. Ernst | Hydraulic Press | hydraulic presses |
| 2,160,217 | May 30, 1939 | E.J. Kingsbury | Machine tool unit with feeding mechanism | metalworking machine mechanisms |
| 2,473,506 | Jun. 21, 1949 | E.P. Bullard | Positioning Device | |
| 2,618,244 | Nov. 18, 1952 | E.G. Roehm | Pilot Valve Controlled Tracer Valve | hydraulic apparatus |
| 2,713,772 | Jul. 26, 1955 | H. Horlacher | Hydraulic Transmission and Control for Machine Tool Tables | machine tool controls |
| 2,761,473 | Sep. 04, 1956 | J.A. Denton | Mechanism for controlling the feed works of a resaw | woodworking machine stockfeeding mechanisms |
| 2,903,234 | Sep. 08, 1959 | H. Steinhauer, V.v. Sundt | Timed Valve with Cam Actuator | metalworking machine mechanisms |
