Heinl radio business letter (Jan-June 1932)

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1,864,921. 1,864,963. 1,865,036. 1,865,065. 1,865,142. 1,865,171. Method and Apparatus for Broadcasting Sound. Paul M. Titus, Binghamton, N. Y. Filed February 21, 1928. Electron Discharge Device. Herbert Vadersen, Eliza¬ beth, N. J. , assignor to Bell Telephone Laboratories, Inc. , New York, N. Y. Filed February 37, 1926. Radio Circuit and Apparatus. David A. Nicosia and Harry Sippel, Chicago, Ill. Filed March 16, 192n. Screen Grid Tube. Balthasar van der Pol, and Klass Posthumus, Eindhoven, Netherlands, assignors to Radio Corporation of America. Filed November 22, 1927, and in the Netherlands, November 19, 1926, Means for Supporting the Electrodes of Thermionic Devices. Henry Joseph Round, London, and William James Picken, Southend-on-Sea, England, assignors to Radio Corporation of America. Filed February 23, 1922, and in Great Britain March 21, 1921. Apparatus for Recording and Reproducing Sound. Harry E. Chipman, Springfield, Mass. , assignor, by direct and mesne assignments to Andrew LeRoy Chipman. Filed May 3, 1928. 1,865,190. Synchronizing System for Television Apparatus. Charles W. Jefferies. Lake Charles, La., assignor of one-fourth to Mason P. Erwin, Lake Charles, La, 23, 1929. Filed October 1,865,210. 1,865,271. 1,865,395. 1,865,421. Electrical Apparatus. William Spencer Purser, London, England, assignor to Columbia Phonograph Co. , Inc. , Bridgeport, Conn. Filed July 25, 1928, and in Great Britain, September 9, 1927. Radio Receiver. Horace E. Osmun, Harry W. Rubinstein, and Erwin R. Stoekle, Milwaukee, Wis. , assignors to Central Radio Laboratories, ££ilwaukee, Wis. Filed October 17, 1930. Radio Telephonograph. John Bailey Browning, Camden, N. J. Filed April 16, 1925. Hot Cathode Electron Discharge Tube. Hubert M. Free¬ man East Pittsbufgh, Pa, , and Wallace G. Wade, New York,