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Yoshio Kobashi
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Tokyo, JP
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last 30 patents
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Patent Grant
Device having raised side edge portions for heat-sealing tubular pa...
Patent number
5,250,140
Issue date
Oct 5, 1993
Shikoku Kakoki Co., Ltd.
Kojiro Hayashi
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL