Hideo Kakegawa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Injection materials for railroad track beds
- Patent number 4,267,085
- Issue date May 12, 1981
- Japanese National Railways
- Yasuo Katoh
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Railroad track bed using injection materials and method therefor
- Patent number 4,156,440
- Issue date May 29, 1979
- Japanese National Railways
- Yasuo Katoh
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES