Fumihiko Okagawa

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Shiga, JP

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Patents Grantslast 30 patents

Information Patent Grant
Rotating disk type sewage treatment device
- Patent number 6,783,669
- Issue date Aug 31, 2004
- Sekisui Aqua Systems Co., Ltd.
- Fumihiko Okagawa
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE