4. Optics: motion pictures
  5. With sound accompaniment
  6. Common picture and sound record carrier systems
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Photographic camera which can use a film cartridge housing a fil

Optics: motion pictures – With sound accompaniment – Common picture and sound record carrier systems
Patent

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Pinch roller actuating device

Optics: motion pictures – With sound accompaniment – Common picture and sound record carrier systems
Patent

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Pinch roller moving devices for simultaneous image and sound rec

Optics: motion pictures – With sound accompaniment – Common picture and sound record carrier systems
Patent

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Pressure developing device provided in an image recording appara

Optics: motion pictures – With sound accompaniment – Common picture and sound record carrier systems
Patent

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Printer module for recording a digital soundtrack

Optics: motion pictures – With sound accompaniment – Common picture and sound record carrier systems
Patent

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Processing variable area film soundtracks

Optics: motion pictures – With sound accompaniment – Common picture and sound record carrier systems
Reexamination Certificate

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