| 11. | Bell pondered the photophone's possible scientific use in the fiber-optic telecommunications:
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| 12. | The Photophone's first practical use came in military communication systems many decades later.
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| 13. | Western Electric later acquired the Photophone trademark.
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| 14. | The military interest on photophone however continued.
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| 15. | Bell transferred the Photophone's rights to the National Bell Telephone Company in May 1880.
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| 16. | In 1929, RKO Radio Pictures became the first motion picture studio to use Photophone exclusively.
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| 17. | Bell transferred the photophone's intellectual property rights to the American Bell Telephone Company in May 1880.
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| 18. | The production company had contracted with RCA Photophone and Britain then had the nearest facility with the system.
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| 19. | On 25 May 1932, the " Los Angeles " participated in a demonstration of photophone technology.
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| 20. | In May 1929, RKO released " Syncopation ", the first film made in RCA Photophone.
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