TREA

railway sleepers or chains

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Industry

  • CPC
  • B21H7/005
This industry / category may be too specific. Please go to a parent level for more data

Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B21Mechanical metalworking B21HMAKING PARTICULAR METAL OBJECTS BY ROLLING B21H7/00Making articles not provided for in the preceding groups

Current Industry

B21H7/005railway sleepers or chains
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    2078082
    • Patent number 2,078,082
    • Issue date Apr 20, 1937
    • 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

    2060782
    • Patent number 2,060,782
    • Issue date Nov 17, 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

    1761672
    • Patent number 1,761,672
    • Issue date Jun 3, 1930
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1667875
    • Patent number 1,667,875
    • Issue date May 1, 1928
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1533026
    • Patent number 1,533,026
    • Issue date Apr 7, 1925
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...