4. Optics: motion pictures
  5. With sound accompaniment
  6. With picture and sound control systems
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Fading audio-level controls for sound-recording motion picture c

Optics: motion pictures – With sound accompaniment – With picture and sound control systems
Patent

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Modular camera system

Optics: motion pictures – With sound accompaniment – With picture and sound control systems
Patent

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Motion picture camera

Optics: motion pictures – With sound accompaniment – With picture and sound control systems
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Motion picture presentation system

Optics: motion pictures – With sound accompaniment – With picture and sound control systems
Patent

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