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Industry

  • CPC
  • E01B11/60
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Current Industry

Patents Grantslast 30 patents

  • Information Patent Grant

    2185357

    • Patent number 2,185,357
    • Issue date Jan 2, 1940
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    1573007

    • Patent number 1,573,007
    • Issue date Feb 16, 1926
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    1400291

    • Patent number 1,400,291
    • Issue date Dec 13, 1921
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES