TREA

purely mechanical

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Industry

  • CPC
  • B61L19/023
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Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B61Railways B61LGUIDING RAILWAY TRAFFIC ENSURING THE SAFETY OF RAILWAY TRAFFIC B61L19/00Arrangements for interlocking between points and signals by means of a single interlocking device

Current Industry

B61L19/023purely mechanical
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    1956751
    • Patent number 1,956,751
    • Issue date May 1, 1934
    • B61 - RAILWAYS
  • Information Patent Grant

    1535923
    • Patent number 1,535,923
    • Issue date Apr 28, 1925
    • B61 - RAILWAYS
  • Information Patent Grant

    1392630
    • Patent number 1,392,630
    • Issue date Oct 4, 1921
    • B61 - RAILWAYS

Patents Applicationslast 30 patents