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3915712
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Patent number 3,915,712
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Issue date Oct 28, 1975
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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3797551
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Patent number 3,797,551
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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3396027
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Patent number 3,396,027
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Issue date Aug 6, 1968
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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2316845
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Patent number 2,316,845
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Issue date Apr 20, 1943
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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2181383
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Patent number 2,181,383
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Issue date Nov 28, 1939
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY