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Patents for James W. Calvert
Patents 1 - 2 of 2
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PictureNumberDatePatenteeTitle
  4,318,465Mar. 09, 1982J.W. Calvert, C.P. ShinkleIndexing Drive Control
  D271,112Oct. 25, 1983R.D. Smith, S.L. Belcher, J.W. Calvert, J.G. WiattChuck Body
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