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Mechanical coupler
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Patent number 6,904,835
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Issue date Jun 14, 2005
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DJ Technologies, Inc.
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Larry Dugan
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Anti-ovaling mechanical coupler
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Patent number 6,851,342
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Issue date Feb 8, 2005
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DJ Technologies, Inc.
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Larry Dugan
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Internal gripping pipe wrench
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Patent number 6,675,679
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Issue date Jan 13, 2004
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DJ Technologies, Inc.
-
Larry Dugan
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS