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Fox Film buys the patents of the Movietone sound system for recording sound onto film.

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Fox Film

American film production company (1915–1935)

The Fox Film Corporation was an American independent company that produced motion pictures and was formed in 1915 by the theater "chain" pioneer William Fox. It was the corporate successor to his earlier Greater New York Film Rental Company and Box Office Attraction Company.
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Movietone sound system

Sound system for film

The Movietone sound system is an optical sound-on-film method of recording sound for motion pictures, ensuring synchronization between sound and picture. It achieves this by recording the sound as a variable-density optical track on the same strip of film that records the…
Source: Wikipedia (CC BY-SA)