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US4204761A
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Light enhancement camera attachment
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Zoom lens focusing mechanism
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Panoramic television cameras
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Automatic non-parallax dual lens
|
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System for optically combining plural images
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US2782683A
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Selective electrical lens adjusting machanisms for variable magnification systems
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Oblique image superimposition projection devices
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Compound image-forming reflecting mirror optical system
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Image superimposition apparatus
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Image superimposition projection devices
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|
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Lens adjusting mechanism
|
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US2515104A
|
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Lens adjusting mechanism
|
|
US2547187A
|
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Lens adjusting mechanism
|
|
US2532684A
|
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Lens adjusting mechanism for cameras
|
|
US2556307A
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Device for increasing illumination of photographic images
|
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US2506947A
|
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Photographic camera lens system
|
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US2525160A
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Camera and flash-lamp synchronizing device, including auxiliary shutter
|
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US2582728A
|
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Indicator for the blind
|
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US2506946A
|
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Indicator for the blind
|
|
US2499895A
|
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Magnetic recording apparatus
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