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In page Tape recorder:

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Franklin C. Goodale adapted movie film for analog audio recording. He received a patent for his invention in 1909. The celluloid film was inscribed and played back with a stylus, in a manner similar to the wax cylinders of Edison's gramophone. The patent description states that the machine could store six records on the same strip of film, side by side, and it was possible to switch between them.[1] In 1912, a similar process was used for the Hiller talking clock.[citation needed]