Hiromi Inoue

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Steel pipe connector of ladder-type sleeper for railway track
- Patent number 5,887,788
- Issue date Mar 30, 1999
- Railway Technical Research Institute
- Hajime Wakui
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Ladder-type sleepers and railway tracks
- Patent number 5,582,346
- Issue date Dec 10, 1996
- Railway Technical Research Institute
- Hajime Wakui
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES