| All Patents of Type: hydraulic pumps |
Patents 1 -
15
of 46
      |
| Number | Date | Patentee | Title | Type |
| GB-179,502,045 | Mar. 31, 1795 | J. Bramah | Obtaining and applying motive power | air pumps |
| 5,423 | Feb. 01, 1848 | R. Dillon | Hydraulic Engine | hydraulic pumps |
| GB-185,602,577 | Nov. 03, 1856 | R. Wilson, J. Nasmyth | Hydraulic pumps and process for packing cotton and other articles of the like nature | hydraulic pumps |
| 119,764 | Oct. 10, 1871 | C. Hodgkins | Improvement in water-rams | hydraulic pumps |
| 133,368 | Nov. 26, 1872 | C. Hodgkins | Improvement in water-rams | hydraulic pumps |
| 1,719,693 | Jul. 02, 1929 | H. Ernst | Variable Displacement Pump | hydraulic pumps |
| 1,722,832 | Jul. 30, 1929 | D.H. West | Hydraulic transmission | hydraulic pumps |
| 1,818,611 | Aug. 11, 1931 | W. Ernst | Radial Pump | hydraulic pumps |
| 1,861,116 | May 31, 1932 | W. Ernst | Control Mechanism for Pumps | hydraulic pump controls |
| 1,870,501 | Aug. 09, 1932 | W. Ernst | Plural Pressure Pump Control for Hydraulic Presses | hydraulic pump controls |
| 1,876,833 | Sep. 13, 1932 | E. Benedek | Pump | hydraulic pumps |
| 1,920,123 | Jul. 25, 1933 | W. Ernst | Radial Pump | hydraulic pumps |
| 1,945,391 | Jan. 30, 1934 | E. Benedek | Pump | hydraulic pumps |
| 1,952,663 | Mar. 27, 1934 | W. Ernst | Control Mechanism for Pumps and Associated Press Circuits | hydraulic pump controls |
| 1,964,244 | Jun. 26, 1934 | E.K. Benedek | Variable Delivery Radial Pump | hydraulic pumps |
