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Electric impact tool
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Patent number 4,204,622
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Issue date May 27, 1980
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James E. Smith
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Impact device
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Patent number 4,189,080
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Issue date Feb 19, 1980
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Senco Products, Inc.
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James E. Smith
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Electro-mechanical impact device
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Patent number 4,121,745
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Issue date Oct 24, 1978
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Senco Products, Inc.
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James E. Smith
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Electric impact tool
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Patent number 4,042,036
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Issue date Aug 16, 1977
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James E. Smith
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Self-contained impact tool
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Patent number 3,967,771
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Issue date Jul 6, 1976
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James E. Smith
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS