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1,770,494. Loud-Speaker. Eugen Reichel, Berlin, Germany, assignor to Gesellschaft fur Drahtlose Telegraphie rn.b.H. , Berlin, Germany. Filed December 15, 1934, and in Germany, Jan. 36, 1934,
1,770,497. Method and Arrangement for Amplifying Photo-electric Currents. Fritz Schroter, Berlin, Germany, assignor to Gesellschaft fur Drahtlose Telegraphie rn.b.H. Hallesches, Berlin, Germany. Filed March 31, 1938, and in Germany March 36, 1937; renewed June 4, 1939.
1,770,501. Electromagnetic Reproducer. Julius Weinberger, New
York, N, Y. , assignor to Radio Corporation of America. Filed August 39, 1935.
1,770,534. Amplifying System. Lester L. Jones, Oradell, N. J. Filed April 9, 1927.
1,770,525. Radio Receiving Apparatus. Lester L. Jones, Oradell, N. J. Filed July 15, 1927.
1,770,537. Reproducing Apparatus. Lionel G, Vachon, George M.
McCarthy and Lawrence J. Ewing, Haverhill, Mass, Filed May 27, 1929.
1,770,541. Radio Frequency Amplifying System. Franklin H.
Mackenzie, Bywood, Pa. Filed August 1, 1925. Renewed January 6, 1930,
1,770,761. Telautograph. George S. Tiffany, Summit, N. J. Filed April 11, 1928.
1,770,771. Radio Apparatus. Charles R. Garrett,. Scotia, N. Y. ,
assignor to General Electric Company. Filed May 19,*28.
1,770,838. Radio Signaling Apparatus. Wendell L, Carlson,
Schenectady, N. Y. , assignor to General Electric Co. Filed May 10, 1928.
Patent Suits
1,263,988. Pridham and Jensen, Amplifying receiver; 1,448,379,
1,579,393, same Electrodynamic receiver, filed April 16,1930, D. C. , N. D. Calif. (San Francisco), Doc. 2615-S, The Magnavox Co. v. Atwater Kent Mfg. Co. et al. Sarnie, Doc. 2616-K, The Magnavox Co. v. Stromberg Carlson Telephone Mfg. Co. et al.
1,507,016. L. de Forest, Radio Signaling System; 1,507,017, same Wireless telegraph and telephone system, filed April 12,1930, D. C. E. D. Mich., (S. Div. ), Doc, 4121, DeForest Radio Co. v. Cardon Phonocraft Corp.
17,245, Re. 17,247, W. G. Cady, Method of maintaining electric currents of constant frequency; Re. 17,355, same, Piezo-elect¬ ric resonator, filed April 8, 1930, D. C. , S. D. , N. Y. , Doc.
E 52/389 Radio Corp. of America v. R. Ct Powell & Co. , Inc.