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Toe puff for safety shoe
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Patent number 5,667,857
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Issue date Sep 16, 1997
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Nitto Boseki Co., Ltd.
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Shoichi Watanabe
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Coupling device
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Patent number 5,156,430
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Issue date Oct 20, 1992
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Yoshida Kogyo K. K.
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Tomohiro Mori
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B66 - HOISTING LIFTING HAULING
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Safety hook
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Patent number 4,908,913
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Issue date Mar 20, 1990
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Yoshida Kogyo K. K.
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Tomohiro Mori
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...