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3040792
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Patent number 3,040,792
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Issue date Jun 26, 1962
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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2515431
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Patent number 2,515,431
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Issue date Jul 18, 1950
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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2499802
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Patent number 2,499,802
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Issue date Mar 7, 1950
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1591663
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Patent number 1,591,663
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Issue date Jul 6, 1926
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1515189
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Patent number 1,515,189
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Issue date Nov 11, 1924
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS