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Patents for John Birkenhead | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 215,479 | May 20, 1879 | N.R. Pratt | Carriage-Wheel Wrench | |
272,849 | Feb. 27, 1883 | J. Birkenhead | Lathe | ||
![]() | 303,975 | Aug. 26, 1884 | J. Birkenhead | Turret or tool-support | |
303,976 | Aug. 26, 1884 | J. Birkenhead | Anvil for Lathes |