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All Patents in class 417/473 | |||||
Number | Date | Patentee | Title | Type | |
9,703X | Jun. 02, 1836 | E. Whitfield | Frictionless pump | pumps | |
6,400 | Apr. 24, 1849 | W.T. Barnes | Bellows | blacksmith | |
213,276 | Mar. 18, 1879 | D. Bickford | Portable Pump or Engine | piston pumps |