Nippon Kokuyu Tetsudo

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Patents Grantslast 30 patents

Information Patent Grant
Tie tamper
- Patent number 4,327,645
- Issue date May 4, 1982
- Nippon Kokuyu Tetsudo
- Kazuhide Yamazaki
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Tie tamper
- Patent number 4,323,014
- Issue date Apr 6, 1982
- Nippon Kokuyu Tetsudo
- Kazuhide Yamazaki
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Ballast tamping apparatus
- Patent number 4,134,342
- Issue date Jan 16, 1979
- Nippon Kokuyu Tetsudo
- Tetsuo Sakai
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES

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