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All Patents in class 417/526 | |||||
Number | Date | Patentee | Title | Type | |
3,899 | Jan. 31, 1845 | W.N. Clark | Single-Twist Auger, Gimlet, &c. | auger bits | |
56,671 | Jul. 24, 1866 | J.W. Douglas | Double acting pump | household hand pumps | |
202,633 | Apr. 23, 1878 | N. Clute | Double-Acting Suction and Force Pump | pumps |