Reif. D. L. In Patent Office, before examiner of interferences, interference no. 81307, D. L. Reif v. H. A. Lebert v. E. E. Nofzinger v. J. J. Jakosky v. B. B. Kahn v. G. D Rogers; interference no. 81308. B. B. Kahn v. D. L. Reif v. E. E. Nofzinger v. J. J. Jakosky v. H. A. Lebert v. G. D. Rogers; interference no, 81309 J. J. Jakosky v. E. E. Nofzinger v. H. A. Lebert v. D. L. Reif v. G. D. Rogers: interference no. 81310. D. L. Reif v. J. J. Jakosky v. G. D. Rogers; brief for party Rogers in opposition to motions of party Reif to amend his preliminary statements in above-identified interferences.