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US3746441A
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Motion picture projector
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US3746453A
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Motion picture sound projector with automatic film threading
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US3690746A
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Feed means for optical display device and control system therefor
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US3450471A
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Camera with remote control and battery recharger
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US3326489A
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Dual reel spindle
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US3391979A
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Cabineted motion picture projector
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US3040945A
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Self-threading motion picture machine
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US2996968A
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Photo-raphic camera with manualautomatic exposure control
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US2926321A
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Resistor structure with adjustably positionable taps
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US2898567A
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Variable resistor with shorted section
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US2773965A
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Electrical rheostat assembly
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US2798686A
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Shock-proof instrument mounting
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US2756940A
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Motion picture film magazine
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US2741152A
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Claw and shutter arrangement for a camera
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US2578082A
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Motion-picture projector transmission
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US2468993A
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Motion-picture projector
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US2495018A
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Hinged aperture gate
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US2440966A
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Ventilation system for motionpicture projectors
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US2604271A
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Projection and rewinding system for motion-picture projectors
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US2326542A
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Photographic enlarger
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