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Transducer
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Patent number 5,592,359
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Issue date Jan 7, 1997
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Undersea Transducer Technology, Inc.
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Harry W. Kompanek
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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Transducer assembly
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Patent number 5,122,992
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Issue date Jun 16, 1992
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Piezo Sona-Tool Corporation
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Harry W. Kompanek
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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Transducer assemblies
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Patent number 5,020,035
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Issue date May 28, 1991
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Undersea Transducer Technology, Inc.
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Harry W. Kompanek
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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Typewriter keyboard
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Patent number 4,878,057
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Issue date Oct 31, 1989
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KDC Corporation
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Harry W. Kompanek
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H03 - BASIC ELECTRONIC CIRCUITRY
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Solid state keyboard
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Patent number 4,737,767
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Issue date Apr 12, 1988
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KDC Corporation
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Harry W. Kompanek
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H03 - BASIC ELECTRONIC CIRCUITRY
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Downhole transducer systems
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Patent number 4,658,897
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Issue date Apr 21, 1987
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Piezo Sona-Tool Corporation
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Harry W. Kompanek
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E21 - EARTH DRILLING MINING
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Electroacoustical transducer
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Patent number 4,651,044
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Issue date Mar 17, 1987
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Harry W. Kompanek
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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Casing tuned downhole tool
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Patent number 4,512,402
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Issue date Apr 23, 1985
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Sona-Tool Development Ltd.
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Harry W. Kompanek
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E21 - EARTH DRILLING MINING
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Entry system
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Patent number 4,206,491
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Issue date Jun 3, 1980
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KKF Corporation
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James R. Ligman
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G07 - CHECKING-DEVICES
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