TREA

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