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Method of making arc tubes
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Patent number 6,857,926
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Issue date Feb 22, 2005
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Advanced Lighting Technologies, Inc.
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Juris Sulcs
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C03 - GLASS MINERAL OR SLAG WOOL
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Method of producing an arc tube
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Patent number 6,557,379
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Issue date May 6, 2003
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Koito Manufacturing Co., Ltd.
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Masakazu Nagasawa
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C03 - GLASS MINERAL OR SLAG WOOL
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3715197
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Patent number 3,715,197
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Issue date Feb 6, 1973
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C03 - GLASS MINERAL OR SLAG WOOL
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2683331
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Patent number 2,683,331
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Issue date Jul 13, 1954
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C03 - GLASS MINERAL OR SLAG WOOL
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2507300
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Patent number 2,507,300
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Issue date May 9, 1950
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C03 - GLASS MINERAL OR SLAG WOOL
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2209739
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Patent number 2,209,739
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Issue date Jul 30, 1940
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C03 - GLASS MINERAL OR SLAG WOOL
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1824216
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Patent number 1,824,216
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Issue date Sep 22, 1931
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C03 - GLASS MINERAL OR SLAG WOOL