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Backlight unit
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Patent number 7,705,545
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Issue date Apr 27, 2010
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Koninklijke Philips Electronics N.V.
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Cornelis Versluijs
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Variable color discharge device
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Patent number 5,363,019
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Issue date Nov 8, 1994
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Research Institute For Applied Sciences
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Ryohei Itatani
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H01 - BASIC ELECTRIC ELEMENTS
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Variable color lighting device
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Patent number 4,996,465
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Issue date Feb 26, 1991
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Matsushita Electric Works, Ltd.
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Tadao Uetsuki
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H01 - BASIC ELECTRIC ELEMENTS
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Variable color-output strobe
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Patent number 4,978,892
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Issue date Dec 18, 1990
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Polaroid Corporation
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Stephanie Petrakos
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H01 - BASIC ELECTRIC ELEMENTS
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3851213
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Patent number 3,851,213
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Issue date Nov 26, 1974
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G01 - MEASURING TESTING
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2700117
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Patent number 2,700,117
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Issue date Jan 18, 1955
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H01 - BASIC ELECTRIC ELEMENTS
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2183042
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Patent number 2,183,042
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Issue date Dec 12, 1939
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H01 - BASIC ELECTRIC ELEMENTS
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2063580
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Patent number 2,063,580
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Issue date Dec 8, 1936
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H01 - BASIC ELECTRIC ELEMENTS
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2011743
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Patent number 2,011,743
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Issue date Aug 20, 1935
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H01 - BASIC ELECTRIC ELEMENTS
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1763108
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Patent number 1,763,108
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Issue date Jun 10, 1930
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H01 - BASIC ELECTRIC ELEMENTS
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1747664
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Patent number 1,747,664
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Issue date Feb 18, 1930
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS