Application of Harry Tanczyn

WORLEY, Judge.

This is an appeal from the decision of the Board of Appeals of the United States Patent Office affirming the final rejection by the Primary Examiner of the single remaining claim of appellant’s application for a patent on a manganese-nitrogen pre-alloy, on the ground of lack of invention over the prior art. The claim reads:

“9. Nitrided electrolytic manganese plates of about one-sixteenth inch thickness and containing 2%- to 7% nitrogen and the remainder substantially all manganese.”

The references relied upon are:

“Weitzenkorn et al. 2,454,020 November 16,1948. Metals and Alloys,…