The board held that upon the facts herein it was without jurisdiction to make such substitution. In support of that holding, the board cited the case of Cohen et al. v. Sparrow, 32 C.C.P.A., Patents, 809, 146 F.2d 284, and quoted extensively from the opinion in that case. It also called attention to the following cases: Josserand v. Taylor, Jr., 31 C.C.P.A., Patents, 709, 138 F.2d 58; Boileau v. Godfrey, 31 C.C.P.A., Patents, 723, 138 F.2d 67; and Smith v. Hayward, 37 C.C.P.A., Patents, 718, 176 F.2d 914. The board distinguished the two cases cited by appellants in their reply brief, Briggs v. Kaisling, 53 App.D.C. 49, 288 F. 254 and Crane v. Grier and Warren, 21 C.C.P.A., Patents, 1163, 71 F.2d 180, holding the doctrine of those two cases not applicable here. It will be observed by a reading of the decision in the Cohen case, supra [ 146 F.2d 287], that this court succinctly outlined the jurisdiction of the Primary Examiner, the Board of Interference Examiners and this court in the following language: