Direct mechanical or chemical fixing of sleepers onto underground

Patents Grantslast 30 patents

  • Information Patent Grant

    Resilient coat for tie of direct-connection type track

    • Patent number 4,652,495
    • Issue date Mar 24, 1987
    • Japanese National Railways
    • Yoshihiko Sato
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    3565336

    • Patent number 3,565,336
    • Issue date Feb 23, 1971
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES