| All Patents in class 417/454 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 13,370 | Jul. 31, 1855 | H.R. Worthington | Direct-acting hydraulic steam-pump | steam pumps |
| 364,258 | Jun. 07, 1887 | F. Keating | Lubricating Pump | oil pumps |
| 620,644 | Mar. 07, 1899 | D.A. Decrow | Pumping engine | steam pumps |
| 1,159,123 | Nov. 02, 1915 | G.F. Steedman | Compressor | air compressors |
| 1,801,082 | Apr. 14, 1931 | F.G. Hobart | Pump | pumps |
| 1,850,690 | Mar. 22, 1932 | S.B. Redfield | Retaining device for plate valves | air compressors |
| 2,138,194 | Nov. 29, 1938 | E.M. Pfauser | Hydraulic Pump | hydraulic pumps |
