TREA

sleepers

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Industry

  • CPC
  • B21K7/06
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Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B21Mechanical metalworking B21KMAKING FORGED OR PRESSED METAL PRODUCTS B21K7/00Making railway appurtenances Making vehicle parts

Current Industry

B21K7/06sleepers
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    2584534
    • Patent number 2,584,534
    • Issue date Feb 5, 1952
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2220036
    • Patent number 2,220,036
    • Issue date Oct 29, 1940
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2204222
    • Patent number 2,204,222
    • Issue date Jun 11, 1940
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2158834
    • Patent number 2,158,834
    • Issue date May 16, 1939
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2142112
    • Patent number 2,142,112
    • Issue date Jan 3, 1939
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2061861
    • Patent number 2,061,861
    • Issue date Nov 24, 1936
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    2023827
    • Patent number 2,023,827
    • Issue date Dec 10, 1935
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1936824
    • Patent number 1,936,824
    • Issue date Nov 28, 1933
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1498824
    • Patent number 1,498,824
    • Issue date Jun 24, 1924
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents