4. Optics: motion pictures
  5. Camera and/or projector drive mechanisms
  6. With speed regulation or selection
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Control and regulating device for film transport in a film proje

Optics: motion pictures – Camera and/or projector drive mechanisms – With speed regulation or selection
Patent

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Control and regulation apparatus for the exposure and transport

Optics: motion pictures – Camera and/or projector drive mechanisms – With speed regulation or selection
Patent

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Control mechanism for the pull-down pawl of a film projector

Optics: motion pictures – Camera and/or projector drive mechanisms – With speed regulation or selection
Patent

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