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Downhole turbine tachometer
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Patent number 10,119,386
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Issue date Nov 6, 2018
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Halliburton Energy Services, Inc.
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Andrew McPherson Downie
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F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
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Fluidic rotational speed sensor
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Patent number 4,602,510
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Issue date Jul 29, 1986
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The United States of America as represented by the Secretary of the Army
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George Mon
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G01 - MEASURING TESTING
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In-hole motor tachometer
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Patent number 4,545,241
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Issue date Oct 8, 1985
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Smith International, Inc.
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Robert L. Alder
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E21 - EARTH DRILLING MINING
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Fluidic antiskid circuit
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Patent number 3,985,398
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Issue date Oct 12, 1976
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The United States of America as represented by the Secretary of the Air Force
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Henrik H. Straub
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B60 - VEHICLES IN GENERAL
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3776043
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Patent number 3,776,043
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Issue date Dec 4, 1973
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B60 - VEHICLES IN GENERAL
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3754471
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Patent number 3,754,471
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Issue date Aug 28, 1973
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G01 - MEASURING TESTING
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3741018
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Patent number 3,741,018
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Issue date Jun 26, 1973
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G01 - MEASURING TESTING
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3707678
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Patent number 3,707,678
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Issue date Dec 26, 1972
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G01 - MEASURING TESTING
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3656353
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Patent number 3,656,353
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Issue date Apr 18, 1972
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G01 - MEASURING TESTING
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3613459
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Patent number 3,613,459
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Issue date Oct 19, 1971
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F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
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3611813
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Patent number 3,611,813
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Issue date Oct 12, 1971
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G01 - MEASURING TESTING
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3572358
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Patent number 3,572,358
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Issue date Mar 23, 1971
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F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
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3535940
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Patent number 3,535,940
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Issue date Oct 27, 1970
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G01 - MEASURING TESTING
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3531985
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Patent number 3,531,985
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Issue date Oct 6, 1970
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F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
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3509773
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Patent number 3,509,773
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Issue date May 5, 1970
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B60 - VEHICLES IN GENERAL
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3292648
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Patent number 3,292,648
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Issue date Dec 20, 1966
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G05 - CONTROLLING REGULATING
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3260271
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Patent number 3,260,271
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Issue date Jul 12, 1966
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G05 - CONTROLLING REGULATING
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3136326
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Patent number 3,136,326
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Issue date Jun 9, 1964
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G05 - CONTROLLING REGULATING
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3033042
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Patent number 3,033,042
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Issue date May 8, 1962
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G01 - MEASURING TESTING
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1946485
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Patent number 1,946,485
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Issue date Feb 13, 1934
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F41 - WEAPONS
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1289370
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Patent number 1,289,370
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Issue date Dec 31, 1918
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G01 - MEASURING TESTING
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1213065
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Patent number 1,213,065
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Issue date Jan 16, 1917
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G01 - MEASURING TESTING
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1192702
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Patent number 1,192,702
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Issue date Jul 25, 1916
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G01 - MEASURING TESTING
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1049220
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Patent number 1,049,220
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Issue date Dec 31, 1912
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G01 - MEASURING TESTING
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1028488
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Patent number 1,028,488
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Issue date Jun 4, 1912
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G01 - MEASURING TESTING
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961835
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Patent number 961,835
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Issue date Jun 21, 1910
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G01 - MEASURING TESTING
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881917
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Patent number 881,917
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Issue date Mar 17, 1908
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G05 - CONTROLLING REGULATING