In re Korum

This is an appeal from the decision of the Board of Appeals of the United States Patent Office affirming the" decision of the Primary Examiner rejecting all of the claims (Nos. 22 to 25, inclusive) in appellants’ application for a patent for an alleged invention relating to improvements in feed mill hammers.

Claim 25 is illustrative of the appealed claims. It reads:

25. A feed mill hammer comprising a flat bar of hardened steel adapted to rotate in a mill with its flat sides disposed in planes of rotation, one of said sides being recessed to provide a longitudinally extending rib, thin patches…