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Ichikawa, JP
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last 30 patents
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Patent Grant
Manufacturing method of square bottom containers
Patent number
5,236,531
Issue date
Aug 17, 1993
Altech Co., Ltd.
Naoomi Yokoyama
B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD
Information
Patent Grant
Manufacturing method of square bottom bags
Patent number
5,006,186
Issue date
Apr 9, 1991
Altech Co., Ltd.
Naoomi Yokoyama
B31 - MAKING ARTICLES OF PAPER OR CARDBOARD WORKING PAPER OR CARDBOARD