| All Patents in class 91/444 |
Patents 1 -
6
of 6
      |
| Picture | Number | Date | Patentee | Title |
| | 605,169 | Jun. 07, 1898 | A.J. Loretz | Hydraulic Motor Regulating Device |
| | 1,267,130 | May 21, 1918 | W.B. Burrows, I.L. Skeith | Power Lifting Mechanism for Saw Trimmers |
| | 1,905,224 | Apr. 25, 1933 | C. Booth, F.S. Haas | Grinding Machinery |
| | 2,570,647 | Oct. 09, 1951 | G.A. Cormier | Power Cylinder and Piston With Leakage Control |
| | 2,602,437 | Jul. 08, 1952 | W.L. Tancred | Hydraulic Profiler for Truing Devices and the Like |
| | 3,043,275 | Jul. 10, 1962 | H.W. Reid, Jr. | Device for Control of Fluid Flow Rate |
