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Halogen incandescent lamp
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Patent number 4,305,017
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Issue date Dec 8, 1981
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U.S. Philips Corporation
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Gijsbert Kuus
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H01 - BASIC ELECTRIC ELEMENTS
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High-pressure discharge lamp
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Patent number 4,127,790
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Issue date Nov 28, 1978
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U.S. Philips Corporation
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Gijsbert Kuus
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H01 - BASIC ELECTRIC ELEMENTS
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High-pressure discharge lamp
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Patent number 4,117,369
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Issue date Sep 26, 1978
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U.S. Philips Corporation
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Gijsbert Kuus
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H01 - BASIC ELECTRIC ELEMENTS
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High-pressure discharge lamp
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Patent number 4,101,796
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Issue date Jul 18, 1978
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U.S. Philips Corporation
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Gijsbert Kuus
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H01 - BASIC ELECTRIC ELEMENTS
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