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Blankette projector
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Patent number 3,992,088
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Issue date Nov 16, 1976
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William C. Blanke
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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3887275
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Patent number 3,887,275
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Issue date Jun 3, 1975
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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3580667
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Patent number 3,580,667
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Issue date May 25, 1971
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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3156597
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Patent number 3,156,597
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Issue date Nov 10, 1964
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY