4. Optics: motion pictures
  5. Camera and/or projector drive mechanisms
  6. With intermittently driven carrier-engaging sprocket
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Intermittent drive mechanism for film

Optics: motion pictures – Camera and/or projector drive mechanisms – With intermittently driven carrier-engaging sprocket
Patent

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Intermittent film drive for motion picture projector

Optics: motion pictures – Camera and/or projector drive mechanisms – With intermittently driven carrier-engaging sprocket
Patent

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Intermittent prime film mover using multi-toothed wheel drive

Optics: motion pictures – Camera and/or projector drive mechanisms – With intermittently driven carrier-engaging sprocket
Patent

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