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Shaft-like parts feeding apparatus
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Patent number 8,336,716
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Issue date Dec 25, 2012
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Yoshitaka Aoyama
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Yoshitaka Aoyama
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Electrode for projection welding
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Patent number 7,291,801
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Issue date Nov 6, 2007
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Yoshitaka Aoyama
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Yoshitaka Aoyama
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Parts welding device
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Patent number 6,768,082
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Issue date Jul 27, 2004
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Yoshitaka Aoyama
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Yoshitaka Aoyama
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Projection bolt welding device
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Patent number 6,653,590
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Issue date Nov 25, 2003
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Yoshitaka Aoyama
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Yoshitaka Aoyama
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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