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Exposure identification accessory
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Patent number 4,182,559
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Issue date Jan 8, 1980
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Polaroid Corporation
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John J. Driscoll
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Camera back
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Patent number 4,172,647
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Issue date Oct 30, 1979
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Polaroid Corporation
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Nicholas Gold
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Film transport for a viewer
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Patent number 4,153,353
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Issue date May 8, 1979
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Polaroid Corporation
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Nicholas Gold
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Photographic film cassette
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Patent number 4,072,972
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Issue date Feb 7, 1978
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Polaroid Corporation
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Nicholas Gold
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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