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Patents for John U. Hubbard
Patents 1 - 3 of 3
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PictureNumberDatePatenteeTitle
  314,845Mar. 31, 1885J.U. HubbardDie for forming ax-poll clips
339,059Mar. 30, 1886J.U. HubbardDevice for making claw-hatchets
427,689May 13, 1890J.U. HubbardMachine for forming ax-polls
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