Toru Iwakawa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Earthquake-proofing reinforcing metal fitting
- Patent number 6,925,772
- Issue date Aug 9, 2005
- Nippon Eisei Center Co., Ltd.
- Toru Iwakawa
- E04 - BUILDING
Information Patent Grant
Earthquake-proofing reinforcing metal fitting
- Patent number 6,751,921
- Issue date Jun 22, 2004
- Nippon Eisei Center Co., Ltd.
- Toru Iwakawa
- E04 - BUILDING