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Patents for Howard E. Darby
Patents 1 - 3 of 3
First set of recordsLast set of records
PictureNumberDatePatenteeTitle
  1,765,592Jun. 24, 1930H.E. Darby, D.C. KlausmeyerSingle Lever Eight-Speed Shift Mechanism
2,193,279Mar. 12, 1940W.F. Groene, H.C. Kemper, H.E. DarbyLathe headstock
  2,247,491Jul. 01, 1941H.E. Darby, H.C. Kemper, W.F. GroeneTransmission Shifter Mechanism
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