RICH, Judge.
The appellants, Edgar E. Ruff and Robert E. Dukeshire, filed an application on July 8, 1950, entitled "Polyphosphate Composition Containing Tarnish Inhibitor," serial No. 172,776. On this appeal it contains claims 20 through 35. Claims 21, 22, 25-28, 31 and 34 stood withdrawn from consideration under Patent Office Rule 142(b), 35 U.S.C. Appendix, and as to them the board dismissed the appeal, affirming the rejection of the others as "lacking invention...
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