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| All Patents in class 417/529 | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,065X | Apr. 12, 1828 | E. Daboll | Fire engine | fire engines | |
| 6,606X | Jun. 13, 1831 | D. Smith | Labor saving pump | pumps | |
| 7,898X | Dec. 27, 1833 | J. Beckwith | Metallic pump | pumps | |
| 9,481X | Mar. 08, 1836 | L. Newton | Double force pump | pumps | |
| 1,719,693 | Jul. 02, 1929 | H. Ernst | Variable Displacement Pump | hydraulic pumps | |