TREA

for signals, including signals actuated by the vehicle

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Industry

  • CPC
  • B61L21/065
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Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B61Railways B61LGUIDING RAILWAY TRAFFIC ENSURING THE SAFETY OF RAILWAY TRAFFIC B61L21/00Station blocking between signal boxes in one yard

Current Industry

B61L21/065for signals, including signals actuated by the vehicle
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Fail-safe timing circuit
    • Patent number 4,150,417
    • Issue date Apr 17, 1979
    • Westinghouse Air Brake Company
    • John O. G. Darrow
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2976403
    • Patent number 2,976,403
    • Issue date Mar 21, 1961
    • B61 - RAILWAYS
  • Information Patent Grant

    2848602
    • Patent number 2,848,602
    • Issue date Aug 19, 1958
    • B61 - RAILWAYS
  • Information Patent Grant

    2532832
    • Patent number 2,532,832
    • Issue date Dec 5, 1950
    • B61 - RAILWAYS
  • Information Patent Grant

    2069044
    • Patent number 2,069,044
    • Issue date Jan 26, 1937
    • B61 - RAILWAYS
  • Information Patent Grant

    2055979
    • Patent number 2,055,979
    • Issue date Sep 29, 1936
    • B61 - RAILWAYS
  • Information Patent Grant

    1779982
    • Patent number 1,779,982
    • Issue date Oct 28, 1930
    • B61 - RAILWAYS
  • Information Patent Grant

    1733977
    • Patent number 1,733,977
    • Issue date Oct 29, 1929
    • B61 - RAILWAYS
  • Information Patent Grant

    1680971
    • Patent number 1,680,971
    • Issue date Aug 14, 1928
    • B61 - RAILWAYS
  • Information Patent Grant

    1407289
    • Patent number 1,407,289
    • Issue date Feb 21, 1922
    • B61 - RAILWAYS
  • Information Patent Grant

    1170156
    • Patent number 1,170,156
    • Issue date Feb 1, 1916
    • B61 - RAILWAYS
  • Information Patent Grant

    1161663
    • Patent number 1,161,663
    • Issue date Nov 23, 1915
    • B61 - RAILWAYS
  • Information Patent Grant

    1090378
    • Patent number 1,090,378
    • Issue date Mar 17, 1914
    • B61 - RAILWAYS
  • Information Patent Grant

    1007243
    • Patent number 1,007,243
    • Issue date Oct 31, 1911
    • B61 - RAILWAYS
  • Information Patent Grant

    829132
    • Patent number 829,132
    • Issue date Aug 21, 1906
    • B61 - RAILWAYS
  • Information Patent Grant

    827772
    • Patent number 827,772
    • Issue date Aug 7, 1906
    • B61 - RAILWAYS
  • Information Patent Grant

    797062
    • Patent number 797,062
    • Issue date Aug 15, 1905
    • B61 - RAILWAYS
  • Information Patent Grant

    785294
    • Patent number 785,294
    • Issue date Mar 21, 1905
    • B61 - RAILWAYS
  • Information Patent Grant

    757722
    • Patent number 757,722
    • Issue date Apr 19, 1904
    • B61 - RAILWAYS
  • Information Patent Grant

    647209
    • Patent number 647,209
    • Issue date Apr 10, 1900
    • B61 - RAILWAYS
  • Information Patent Grant

    637414
    • Patent number 637,414
    • Issue date Nov 21, 1899
    • B61 - RAILWAYS
  • Information Patent Grant

    600420
    • Patent number 600,420
    • Issue date Mar 8, 1898
    • B61 - RAILWAYS
  • Information Patent Grant

    599456
    • Patent number 599,456
    • Issue date Feb 22, 1898
    • B61 - RAILWAYS
  • Information Patent Grant

    565518
    • Patent number 565,518
    • Issue date Aug 11, 1896
    • B61 - RAILWAYS
  • Information Patent Grant

    558858
    • Patent number 558,858
    • Issue date Apr 21, 1896
    • B61 - RAILWAYS
  • Information Patent Grant

    556797
    • Patent number 556,797
    • Issue date Mar 24, 1896
    • B61 - RAILWAYS
  • Information Patent Grant

    537133
    • Patent number 537,133
    • Issue date Apr 9, 1895
    • B61 - RAILWAYS
  • Information Patent Grant

    524758
    • Patent number 524,758
    • Issue date Aug 21, 1894
    • B61 - RAILWAYS
  • Information Patent Grant

    496473
    • Patent number 496,473
    • Issue date May 2, 1893
    • B61 - RAILWAYS
  • Information Patent Grant

    489629
    • Patent number 489,629
    • Issue date Jan 10, 1893
    • B61 - RAILWAYS

Patents Applicationslast 30 patents