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Patents for M. R. Spayd
Patents 1 - 3 of 3
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PictureNumberDatePatenteeTitle
  977,541Dec. 06, 1910H.W. OsterDie-stock
1,139,063May 11, 1915H.W. OsterLathe attachment for stamping markings
1,159,790Nov. 09, 1915H.W. OsterOiling mechanism for machine-tools
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