Harutoshi Miyazaki

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Kitasoma, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of drilling a branch line aperture after internal lining of...
- Patent number 4,951,758
- Issue date Aug 28, 1990
- Sekisui Kagaku Kogo Kabushiki Kaisha
- Masahisa Sonku
- E03 - WATER SUPPLY SEWERAGE