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Patents for Q. S. Backus
Patents 1 - 3 of 3
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PictureNumberDatePatenteeTitle
35,715Jun. 24, 1862J.A. ThayerCombination Tool
82,583Sep. 29, 1868Q.S. BackusImproved chuck-drill
91,068Jun. 08, 1869Q.S. BackusImproved vise
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