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Shadow mask
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Patent number 6,633,115
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Issue date Oct 14, 2003
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Dai Nippon Printing Co., Ltd.
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Akira Makita
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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Shadow mask for Braun tube
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Patent number 6,593,684
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Issue date Jul 15, 2003
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Dai Nippon Printing Co., Ltd.
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Akira Makita
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H01 - BASIC ELECTRIC ELEMENTS
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Shadow mask
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Patent number 6,559,583
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Issue date May 6, 2003
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Dai Nippon Printing Co., Ltd.
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Nobuaki Kanayama
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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