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Percussion device
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Patent number 10,883,312
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Issue date Jan 5, 2021
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Jaron Lyell Mcmillan
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Jet hammer
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Patent number 9,038,744
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Issue date May 26, 2015
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COIL TUBING TECHNOLOGY, INC.
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Jerry L. Swinford
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E21 - EARTH DRILLING MINING
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Downhole tool
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Patent number 7,073,610
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Issue date Jul 11, 2006
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Rotech Holdings Limited
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Hector Fillipus Alexander Van Drentham Susman
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E21 - EARTH DRILLING MINING
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-
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Impactor drill tool
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Patent number 4,359,109
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Issue date Nov 16, 1982
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Hughes Tool Company
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Hung-Viet Truong-Cao
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Double-piston rock drill
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Patent number 4,036,309
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Issue date Jul 19, 1977
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Anatoly Mikhailovich Petreev
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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3926266
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Patent number 3,926,266
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Issue date Dec 16, 1975
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E21 - EARTH DRILLING MINING
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3867988
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Patent number 3,867,988
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Issue date Feb 25, 1975
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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3866692
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Patent number 3,866,692
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Issue date Feb 18, 1975
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3828617
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Patent number 3,828,617
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Issue date Aug 13, 1974
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3463246
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Patent number 3,463,246
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Issue date Aug 26, 1969
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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3404739
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Patent number 3,404,739
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Issue date Oct 8, 1968
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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3392957
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Patent number 3,392,957
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Issue date Jul 16, 1968
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E21 - EARTH DRILLING MINING
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3385379
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Patent number 3,385,379
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Issue date May 28, 1968
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E21 - EARTH DRILLING MINING
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3336986
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Patent number 3,336,986
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Issue date Aug 22, 1967
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E21 - EARTH DRILLING MINING
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3323601
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Patent number 3,323,601
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Issue date Jun 6, 1967
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES