Tomio Kigawa

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Matsubara, JP

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Patents Grantslast 30 patents

Information Patent Grant
Rock bolt
- Patent number 4,413,929
- Issue date Nov 8, 1983
- Kubota, Ltd.
- Tomio Kigawa
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Piping systems for drainage and piping members therefor
- Patent number 4,121,914
- Issue date Oct 24, 1978
- Kubota, Ltd.
- Tomio Kigawa
- E03 - WATER SUPPLY SEWERAGE