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Pneumatic rock drill
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Patent number 7,441,611
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Issue date Oct 28, 2008
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Sulzer South Africa Limited
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Michael R. Davies
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Pneumatic drill
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Patent number 5,040,618
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Issue date Aug 20, 1991
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Cannon Industries, Inc.
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Ward D. Morrison
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Pneumatic drill
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Patent number 4,957,171
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Issue date Sep 18, 1990
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Cannon Industries, Inc.
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Ward D. Morrison
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Pneumatic rock drills
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Patent number 4,340,121
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Issue date Jul 20, 1982
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Joy Manufacturing Company
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Edward A. Bailey
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Pneumatic drill lubricator
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Patent number 4,333,538
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Issue date Jun 8, 1982
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Atlas Copco Aktiebolag
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Carl G. B. Ekwall
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Air-line lubricators and the like
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Patent number 4,174,767
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Issue date Nov 20, 1979
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West Rand Engineering Works (Proprietary) Limited
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Petrus H. Kramer
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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3921731
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Patent number 3,921,731
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Issue date Nov 25, 1975
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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3722625
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Patent number 3,722,625
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Issue date Mar 27, 1973
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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3572448
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Patent number 3,572,448
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Issue date Mar 30, 1971
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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3534553
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Patent number 3,534,553
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Issue date Oct 20, 1970
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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3241635
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Patent number 3,241,635
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Issue date Mar 22, 1966
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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3121472
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Patent number 3,121,472
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Issue date Feb 18, 1964
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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3119456
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Patent number 3,119,456
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Issue date Jan 28, 1964
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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3115949
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Patent number 3,115,949
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Issue date Dec 31, 1963
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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2899018
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Patent number 2,899,018
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Issue date Aug 11, 1959
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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2897919
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Patent number 2,897,919
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Issue date Aug 4, 1959
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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2879864
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Patent number 2,879,864
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Issue date Mar 31, 1959
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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2865468
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Patent number 2,865,468
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Issue date Dec 23, 1958
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS