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All Patents in class 335/306
Patents 1 - 3 of 3
First set of recordsLast set of records
PictureNumberDatePatenteeTitle
2,209,558Jul. 30, 1940O. Block, J. BingMagnetic clamping appliance
2,609,430Sep. 02, 1952W.L. BowerMagnetic Work Holder
  2,947,921Aug. 02, 1960E.L. WateletFine Grid Permanent Magnetic Chuck
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