TREA

Freezing apparatus

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Industry

  • CPC
  • E21D1/14
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21DSHAFTS TUNNELS GALLERIES LARGE UNDERGROUND CHAMBERS E21D1/00Sinking shafts

Current Industry

E21D1/14Freezing apparatus
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Non-entry method of underground excavation in weak or water bearing...
    • Patent number 5,380,127
    • Issue date Jan 10, 1995
    • Cigar Lake Mining Corporation
    • Clovis Caleix
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Ice-filled structure and tunnelling method for the egress and launc...
    • Patent number 4,431,349
    • Issue date Feb 14, 1984
    • E. I. Du Pont de Nemours & Co.
    • David L. Coursen
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Ground freezing method
    • Patent number 3,943,722
    • Issue date Mar 16, 1976
    • Union Carbide Canada Limited
    • John William Ross
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    3660987
    • Patent number 3,660,987
    • Issue date May 9, 1972
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    3584254
    • Patent number 3,584,254
    • Issue date Jun 8, 1971
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3299643
    • Patent number 3,299,643
    • Issue date Jan 24, 1967
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3220470
    • Patent number 3,220,470
    • Issue date Nov 30, 1965
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    2961840
    • Patent number 2,961,840
    • Issue date Nov 29, 1960
    • F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
  • Information Patent Grant

    2931187
    • Patent number 2,931,187
    • Issue date Apr 5, 1960
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    2645093
    • Patent number 2,645,093
    • Issue date Jul 14, 1953
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    2596788
    • Patent number 2,596,788
    • Issue date May 13, 1952
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    1812267
    • Patent number 1,812,267
    • Issue date Jun 30, 1931
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1704577
    • Patent number 1,704,577
    • Issue date Mar 5, 1929
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    1491373
    • Patent number 1,491,373
    • Issue date Apr 22, 1924
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Patents Applicationslast 30 patents