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Patents for John Birkenhead
Patents 1 - 4 of 4
First set of recordsLast set of records
PictureNumberDatePatenteeTitle
215,479May 20, 1879N.R. PrattCarriage-Wheel Wrench
  272,849Feb. 27, 1883J. BirkenheadLathe
303,975Aug. 26, 1884J. BirkenheadTurret or tool-support
  303,976Aug. 26, 1884J. BirkenheadAnvil for Lathes
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