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11/25/1980
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04/02/1974
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06/25/1974
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09/03/1974
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06/26/1979
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09/30/1980
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08/26/1980
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01/27/1981
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08/26/1980
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08/04/1981
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03/23/1982
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08/30/1983
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07/03/1984
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10/04/1983
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02/14/1984
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01/29/1985
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07/10/1984
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02/22/1982
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08/20/1985
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05/24/1982
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06/18/1985
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06/25/1982
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10/30/1984
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09/30/1982
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CRAB PROCESSING MACHINE
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10/07/1986
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10/18/1982
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03/31/1987
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10/18/1982
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SEISMIC VIBRATOR SOURCE HAVING IMPROVED PHASE DETECTOR
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11/08/1988
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01/19/1983
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11/18/1986
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05/27/1983
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AIR RELEASE IN SEISMIC SOURCE AIR GUN
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Patent #:
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Issue Dt:
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08/13/1985
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Application #:
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06504333
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Filing Dt:
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06/14/1983
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Title:
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COMPOUND FLOATING POINT AMPLIFIER
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Patent #:
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Issue Dt:
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08/13/1985
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Application #:
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06504334
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Filing Dt:
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06/14/1983
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Title:
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EXTENDED RANGE SAMPLE AND HOLD CIRCUIT
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