Okimasa Ohsawa

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Patents Grantslast 30 patents

Information Patent Grant
Method of manufacturing a pulp molding die
- Patent number 5,745,971
- Issue date May 5, 1998
- Nippon Paper Industries Co., Ltd.
- Okimasa Ohsawa
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL