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Masking film
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Patent number 5,368,962
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Issue date Nov 29, 1994
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Somar Corporation
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Naohiko Kiryu
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Lightsafe masking film
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Patent number 5,043,198
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Issue date Aug 27, 1991
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Somar Corporation
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Hiroshi Maruyama
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Lightsafe masking film
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Patent number 5,009,944
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Issue date Apr 23, 1991
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Somar Corporation
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Hiroshi Maruyama
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Lightsafe masking film
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Patent number 4,925,713
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Issue date May 15, 1990
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Somar Corporation
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Naohiko Kiryu
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Lightsafe masking film
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Patent number 4,923,727
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Issue date May 8, 1990
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Somar Corporation
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Hiroshi Maruyama
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY