Syoji Watanabe

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Hitachi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for controlling an aeration tank in an activated sludge sew...
- Patent number 4,437,992
- Issue date Mar 20, 1984
- Hitachi, Ltd.
- Yukio Saito
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR