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Patents for Frank Harrington
Patents 1 - 3 of 3
First set of recordsLast set of records
PictureNumberDatePatenteeTitle
  628,730Jul. 11, 1899F. Harrington, A. WhitneyWork Holder for Lathe Spindles
  644,279Feb. 27, 1900F. Harrington, E.M. CouchFeedAttachment for Screw or Analogous Machines
  644,310Feb. 27, 1900F. Harrington, L.C. WoernerMultiple Spindle Screw Machine
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