| All Patents in class 100/269.16 |
Patents 1 -
13
of 13
      |
| Number | Date | Patentee | Title | Type |
| 5,423 | Feb. 01, 1848 | R. Dillon | Hydraulic Engine | hydraulic pumps |
| 424,040 | Mar. 25, 1890 | J.H. Vaile | Press for oil-seeds | seed or nut presses |
| 642,009 | Jan. 23, 1900 | W. Lewis, C. Sellers, W. Sellers | Hydraulic Press | punch presses |
| 1,763,142 | Jun. 10, 1930 | W. Ernst | Hydraulic Press | hydraulic presses |
| 1,847,073 | Mar. 01, 1932 | W. Ernst | Hydraulic Press | hydraulic presses |
| 1,851,622 | Mar. 29, 1932 | W. Ernst | Valve Mechanism for Hydraulic Presses | hydraulic presses |
| 1,870,500 | Aug. 09, 1932 | H.F. MacMillin, W. Ernst | Hydraulic Press | hydraulic presses |
| 1,884,060 | Oct. 25, 1932 | H.F. MacMillin | Hydraulic Press | hydraulic presses |
| 1,892,568 | Dec. 27, 1932 | W. Ernst | Surge Valve for Hydraulic Presses or the Like | hydraulic presses |
| 1,901,291 | Mar. 14, 1933 | W. Ernst | Hydraulic Press | hydraulic presses |
| 1,956,758 | May 01, 1934 | W. Ernst | Hydraulic Press Operating Circuits | hydraulic presses |
| 2,009,487 | Jul. 30, 1935 | R. Thoreson, W. Ernst | Hydraulic Press | hydraulic presses |
| 2,127,324 | Aug. 16, 1938 | E. Cannon | Prefill valve for hydraulic presses | hydraulic metalworking presses |
