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Analog "blue" signal detector
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Patent number 5,123,032
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Issue date Jun 16, 1992
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The Grass Valley Group, Inc.
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David L. Hershberger
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Multifunction amplifier
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Patent number 4,799,026
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Issue date Jan 17, 1989
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The Grass Valley Group, Inc.
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Steven B. La Barge
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H03 - BASIC ELECTRONIC CIRCUITRY
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Video signal format
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Patent number 4,654,696
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Issue date Mar 31, 1987
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Grass Valley Group, Inc.
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Birney D. Dayton
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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