Kenji Watanabe

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Kitakyushu, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of attaching sheet filter to inlet opening of ventilation fa...
- Patent number 5,107,580
- Issue date Apr 28, 1992
- Casle Industrial Co., Ltd.
- Kenji Watanabe
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL