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Power control circuit
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Patent number 4,519,011
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Issue date May 21, 1985
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Mobil Oil Corporation
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Edgar A. Bowden
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G11 - INFORMATION STORAGE
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Optical seismograph
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Patent number 4,119,173
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Issue date Oct 10, 1978
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Sekhavat; Ali
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Ali Sekhavat
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G01 - MEASURING TESTING
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3872478
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Patent number 3,872,478
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Issue date Mar 18, 1975
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G01 - MEASURING TESTING
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3795006
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Patent number 3,795,006
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Issue date Feb 26, 1974
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G01 - MEASURING TESTING
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3740757
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Patent number 3,740,757
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Issue date Jun 19, 1973
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G01 - MEASURING TESTING
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3623121
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Patent number 3,623,121
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Issue date Nov 23, 1971
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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3506957
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Patent number 3,506,957
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Issue date Apr 14, 1970
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G01 - MEASURING TESTING
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3437991
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Patent number 3,437,991
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Issue date Apr 8, 1969
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G01 - MEASURING TESTING
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3343172
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Patent number 3,343,172
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Issue date Sep 19, 1967
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G01 - MEASURING TESTING
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3303507
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Patent number 3,303,507
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Issue date Feb 7, 1967
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G01 - MEASURING TESTING