TREA

using brick- laying machines

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Industry

  • CPC
  • E21D11/07
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21DSHAFTS TUNNELS GALLERIES LARGE UNDERGROUND CHAMBERS E21D11/00Lining tunnels, galleries or other underground cavities

Current Industry

E21D11/07using brick- laying machines
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Apparatus for lining kilns, tunnels and the like
    • Patent number 4,363,202
    • Issue date Dec 14, 1982
    • Eugene B. Kenyon
    • F27 - FURNACES KILNS OVENS RETORTS
  • Information Patent Grant

    3417533
    • Patent number 3,417,533
    • Issue date Dec 24, 1968
    • E04 - BUILDING
  • Information Patent Grant

    3075359
    • Patent number 3,075,359
    • Issue date Jan 29, 1963
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2128172
    • Patent number 2,128,172
    • Issue date Aug 23, 1938
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1917170
    • Patent number 1,917,170
    • Issue date Jul 4, 1933
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1823757
    • Patent number 1,823,757
    • Issue date Sep 15, 1931
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1516976
    • Patent number 1,516,976
    • Issue date Nov 25, 1924
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1505060
    • Patent number 1,505,060
    • Issue date Aug 12, 1924
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1478163
    • Patent number 1,478,163
    • Issue date Dec 18, 1923
    • E21 - EARTH DRILLING MINING