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US2925010A
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Variable focal length lens
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US2937563A
|
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Fading and dissolving device for motion picture cameras
|
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US2769372A
|
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Three component objectives for photographic and projection purposes
|
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US2769371A
|
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Telephoto objective lens comprising four elements
|
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US2762261A
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Lens mount locking device
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US2863358A
|
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Photographic lens mount
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US2769364A
|
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Lens cap
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US2696052A
|
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Radar boresight
|
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US2627214A
|
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Photographic shutter with synchronizer
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US2627215A
|
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Photographic shutter with synchronizer
|
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US2575121A
|
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Photographic shutter with built-in flash synchronizer
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US2502668A
|
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Camera shutter having built-in flash synchronizing means
|
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US2467591A
|
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Testing mechanism for photographic flash lamps
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US2480001A
|
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Microscope fine adjustment mechanism
|
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US2480604A
|
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Built-in flashlight and shutter synchronizer with adjustable delay means
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US2483023A
|
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Flashlight and shutter synchronizer having adjustable switch actuating member
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US2465578A
|
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Iris diaphragm blade
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US2411777A
|
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Iris diaphragm mechanism for projection lenses
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US2404526A
|
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Flashlight and shutter synchronizer
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US2290362A
|
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Flashlight photographic shutter
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