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| All Patents in class 417/567 | |||||
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| Number | Date | Patentee | Title | Type | |
| 578,950 | Mar. 16, 1897 | J. Stumpf | Pump | pumps | |
| 1,708,158 | Apr. 09, 1929 | E.H. Stedman | Valve structure for compressors | air compressors | |
| 1,865,000 | Jun. 28, 1932 | M.J. Goldberg | Pumping Means | piston pumps | |
| 3,702,624 | Nov. 14, 1972 | H. Fries | Piston Pump | water pump valves | |