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Patents for Francis C. Sanford
Patents 1 - 3 of 3
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PictureNumberDatePatenteeTitle
1,483,748Feb. 12, 1924F.C. SanfordGrinding Machine
  1,611,135Dec. 14, 1926F.C. SanfordGrinding Machine
  1,611,136Dec. 14, 1926F.C. SanfordCenterless Grinding Machine for Tapering Drills and the Like
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