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Guided underwater object
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Patent number 7,190,637
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Issue date Mar 13, 2007
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Qinetiq Limited
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Benjamin Scott Evans
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G01 - MEASURING TESTING
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Light activated acoustic pinger
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Patent number 4,156,136
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Issue date May 22, 1979
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The United States of America as represented by the Secretary of the Navy
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James A. Strum
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G01 - MEASURING TESTING
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3629795
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Patent number 3,629,795
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Issue date Dec 21, 1971
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G01 - MEASURING TESTING
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3530365
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Patent number 3,530,365
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Issue date Sep 22, 1970
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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3447125
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Patent number 3,447,125
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Issue date May 27, 1969
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G01 - MEASURING TESTING
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3336572
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Patent number 3,336,572
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Issue date Aug 15, 1967
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G05 - CONTROLLING REGULATING
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3160850
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Patent number 3,160,850
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Issue date Dec 8, 1964
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G05 - CONTROLLING REGULATING