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Patents for Ernst W. Kopke
Patents 1 - 3 of 3
First set of recordsLast set of records
PictureNumberDatePatenteeTitle
  1,899,202Feb. 28, 1933L.J. Struebig, E.W. KopkeCane Mill
  2,190,029Feb. 13, 1940E.W. KopkeCane Mill
  2,797,635Jul. 02, 1957E.W. KopkeCane Crushing Mill
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