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Patent number 6,018,560
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Issue date Jan 25, 2000
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LG Semicon Co., Ltd.
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Byung-Doo Kim
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H03 - BASIC ELECTRONIC CIRCUITRY
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3500064
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Patent number 3,500,064
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Issue date Mar 10, 1970
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H03 - BASIC ELECTRONIC CIRCUITRY
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3495073
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Patent number 3,495,073
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Issue date Feb 10, 1970
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H03 - BASIC ELECTRONIC CIRCUITRY
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2977539
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Patent number 2,977,539
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Issue date Mar 28, 1961
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H03 - BASIC ELECTRONIC CIRCUITRY
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2823856
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Patent number 2,823,856
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Issue date Feb 18, 1958
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H03 - BASIC ELECTRONIC CIRCUITRY