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All Patents in class 451/251
Patents 1 - 4 of 4
First set of recordsLast set of records
PictureNumberDatePatenteeTitle
2,232,228Feb. 18, 1941W.L. GroeneCrankpin grinder
  2,232,229Feb. 18, 1941W.F. GroeneCrankpin Grinder
  2,623,429Dec. 30, 1952H.J. Siekmann, W.R. MeyerWork Handling Appparatus for Machine Tools
  2,706,872Apr. 26, 1955C.H. Drury, E.V. FlandersGrinding Machine
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