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US2795169A
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Slide projector apparatus
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US2677986A
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Shutter and actuating mechanism for slide projectors
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US2671378A
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Automatic slide projector
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US2617142A
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Detachable camera handle
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US2656631A
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Film mount slide
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US2528855A
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Apparatus for use in association with two picture projector machines
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US2586611A
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Automatic slide changing and picture dissolving mechanism for still picture projectors
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US2549289A
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Mechanism for automatically operating a picture slide changer of the manual type
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US2646956A
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Tripod
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US2593727A
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Electric circuit timing switch
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US2624469A
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Foldable vertically adjustable table
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US2562600A
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Ventilating fan for picture projecting apparatus
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US2653000A
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Tripod structure
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