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| All Patents in class 418/206.7 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,664,745 | Apr. 03, 1928 | F.O. Hoagland | Fluid Pump | oil pumps | |
| 2,887,065 | May 19, 1959 | A.S. Johnson | Gear Pump Unit | rotary pumps | |