International projectionist (Oct 1931-Sept 1933)

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ROJECTIONISl \. Tubes for every standard and special make of sound equipment Edited by James J. Finn DUOVAC TUBES today, tomorrow , next week— AND NEXT YEAR Skilled engineering personnel and an unusually efficient production organization are the twin secrets for DUOVAC supremacy. Standards and guarantees that looked like dreams two years ago are taken for granted by DUOVAC users today. Constant research is producing the daily improvements that will keep DUOVAC in the forefront this year, next year, and every year. All the more important theatre chains, all the United States government departments, all users who must have better sound and longer life at lower costs — all standardize on DUOVACS. Order direct or through your supply dealer DUOVAC RADIO TUBE Corp. 360 Furman St. Brooklyn, N. Y. July-August 1933 Vol. 5, No. 5 A magazine devoted to better visual and sound reproduction 25c a copy ^2.00 a ytat