| All Patents in class 417/404 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 6,274 | Apr. 03, 1849 | W.H. Baker, H.R. Worthington | Method of insuring the action of the valves in the direct-action pumping-engines | steam pumps |
| 27,426 | Mar. 13, 1860 | A. Brown, F. Brown | Steam-pump | steam pumps |
| 113,725 | Apr. 18, 1871 | W. Baxter, Jr. | Steam Pump | steam pumps |
| 138,622 | May 06, 1873 | R. Eickemeyer | Improvement in steam-pumps | steam pumps |
| 263,694 | Sep. 05, 1882 | H.F. Gaskill | Pumping engine | steam pumps |
| 766,237 | Aug. 02, 1904 | H.F. Frisbie | Direct Acting Pump | steam pumps |
