discussed Cited "see, e.g." Celestron Pacific v. Criterion Manufacturing Co. See also Congoleum Indus., Inc. v. Armstrong Cork Co., 339 F.Supp. 1036, 1055 (E.D.Pa.1972), (prima facie presumption that persons named in patent were the inventors can only be rebutted by strong, clear and convincing evidence), aff’d, 510 F.2d 334 (3 Cir.), cert. denied, 421 U.S. 988 , 95 S.Ct. 1991 , 44 L.Ed.2d 478 (1975).