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Pneumatic tool
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Patent number 6,161,628
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Issue date Dec 19, 2000
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Q.C. Witness Int. Co., Ltd.
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I-Yueh Liu
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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3060894
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Patent number 3,060,894
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Issue date Oct 30, 1962
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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1593615
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Patent number 1,593,615
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Issue date Jul 27, 1926
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS