In re Waldbaum, 457 F.2d 997, 173 U.S.P.Q. (BNA) 430 (C.C.P.A. 1972) (full-text), superseded by, 559 F.2d 611, 194 U.S.P.Q. (BNA) 465 (C.C.P.A. 1977) (full-text).