TREA

Duct connections

Follow

Industry

  • CPC
  • E21F1/06
This industry / category may be too specific. Please go to a parent level for more data

Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS E21F1/00Ventilation of mines or tunnels Distribution of ventilating currents

Current Industry

E21F1/06Duct connections
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Underground ventilation apparatus and method
    • Patent number 10,760,420
    • Issue date Sep 1, 2020
    • Polyvent PTY LTD
    • Joseph Ianni
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Security for grate covering underground air vents
    • Patent number 10,619,884
    • Issue date Apr 14, 2020
    • Floodbreak, L.L.C.
    • Louis A. Waters
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    System and method for connecting two flexible containers
    • Patent number 8,925,973
    • Issue date Jan 6, 2015
    • Flecotec AG
    • Guenter Untch
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Coupling for mine ventilation conduits
    • Patent number 4,358,139
    • Issue date Nov 9, 1982
    • Peabody ABC Corporation
    • Robert W. Hoy
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Flexible ducting joints
    • Patent number 4,037,862
    • Issue date Jul 26, 1977
    • Coal Industry (Patents) Limited
    • Peter Thorp
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Flexible ducting joint
    • Patent number 4,014,569
    • Issue date Mar 29, 1977
    • Coal Industry (Patents) Limited
    • Peter Thorp
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3705736
    • Patent number 3,705,736
    • Issue date Dec 12, 1972
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3491800
    • Patent number 3,491,800
    • Issue date Jan 27, 1970
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    3441655
    • Patent number 3,441,655
    • Issue date Apr 29, 1969
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3314227
    • Patent number 3,314,227
    • Issue date Apr 18, 1967
    • D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
  • Information Patent Grant

    2245037
    • Patent number 2,245,037
    • Issue date Jun 10, 1941
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    2232517
    • Patent number 2,232,517
    • Issue date Feb 18, 1941
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2160354
    • Patent number 2,160,354
    • Issue date May 30, 1939
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2122925
    • Patent number 2,122,925
    • Issue date Jul 5, 1938
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2089940
    • Patent number 2,089,940
    • Issue date Aug 17, 1937
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    2003732
    • Patent number 2,003,732
    • Issue date Jun 4, 1935
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2003918
    • Patent number 2,003,918
    • Issue date Jun 4, 1935
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1948909
    • Patent number 1,948,909
    • Issue date Feb 27, 1934
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1861296
    • Patent number 1,861,296
    • Issue date May 31, 1932
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1525538
    • Patent number 1,525,538
    • Issue date Feb 10, 1925
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1440814
    • Patent number 1,440,814
    • Issue date Jan 2, 1923
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    1310559
    • Patent number 1,310,559
    • Issue date Jul 22, 1919
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1291251
    • Patent number 1,291,251
    • Issue date Jan 14, 1919
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1211067
    • Patent number 1,211,067
    • Issue date Jan 2, 1917
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents