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Patents for Cox & Prentiss
Patents 1 - 3 of 3
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PictureNumberDatePatenteeTitle
407,577Jul. 23, 1889J.D. Cox, Jr.Machine for back-clearing twist-drills
  407,721Jul. 23, 1889J.D. Cox, Jr.Machine for back-clearing twist-drills
  797,820Aug. 22, 1905E.C. PeckTool Holder
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