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Keitaro Kunugiza
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Yokohama, JP
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last 30 patents
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Patent Grant
Hot forming mold and method of manufacturing the same
Patent number
5,171,458
Issue date
Dec 15, 1992
Onoda Cement Co., Ltd.
Koichi Tsukiyama
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Patent Grant
Hot forming mold and method of manufacturing the same
Patent number
4,966,629
Issue date
Oct 30, 1990
Onada Cement Co., Ltd
Koichi Tsukiyama
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL