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Ultrasonic distance meter
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Patent number 5,442,592
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Issue date Aug 15, 1995
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The Whitaker Corporation
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Minoru Toda
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G01 - MEASURING TESTING
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Impact zone detection device
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Patent number 5,336,959
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Issue date Aug 9, 1994
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The Whitaker Corporation
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Kyung-Tae Park
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Electroacoustic novelties
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Patent number 5,309,519
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Issue date May 3, 1994
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The Whitaker Corporation
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Kyung T. Park
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Electroacoustic novelties
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Patent number 5,115,472
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Issue date May 19, 1992
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Kyung T. Park
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Piezoelectric transducer array
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Patent number 4,975,616
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Issue date Dec 4, 1990
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Atochem North America, Inc.
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Kyung T. Park
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H03 - BASIC ELECTRONIC CIRCUITRY
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Hail sensor
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Patent number 4,904,894
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Issue date Feb 27, 1990
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Pennwalt Corporation
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John C. Henry
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G01 - MEASURING TESTING
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