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Electron-emitting device
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Patent number 6,350,999
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Issue date Feb 26, 2002
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Matsushita Electric Industrial Co., Ltd.
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Takeshi Uenoyama
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Electroluminescent display device
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Patent number 4,814,668
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Issue date Mar 21, 1989
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Matsushita Electric Industrial Co., Ltd.
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Takao Tohda
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Electroluminescent display device
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Patent number 4,634,934
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Issue date Jan 6, 1987
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Matsushita Electric Industrial Co. Ltd.
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Takao Tohda
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Method of making a magnetic head
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Patent number 4,288,307
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Issue date Sep 8, 1981
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Matsushita Electric Industrial Co., Ltd.
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Kiyotaka Wasa
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...