FI-MainGroup/Facet-Choice

  • E21F,ESW
  • Applicable area: "1/00-17/18" Support systems of construction works, e.g. designing, execution, management [other than control]
  • E21F,ETD
  • Applicable area: "1/00-17/18" Characterized by installing solar cells to civil engineering structures, buildings or ground
    Ventilation of mines or tunnels
  • E21F1/00
  • Ventilation of mines or tunnels; Distribution of ventilating currents (ventilating rooms or spaces in general F24F) [2] HB CC 2D062
  • E21F3/00
  • Cooling or drying of air (air-conditioning rooms or spaces in general F24F) HB CC 2D062
    Safety devices; Rescue devices
  • E21F5/00
  • Means or methods for preventing, binding, depositing or removing dust; Preventing explosions or fires (dams E21F 17/103; applying liquids or other fluent materials to surfaces in general B05; flue-gas indicators G01N) [6] HB CC 2D062
  • E21F7/00
  • Methods or devices for drawing-off gases with or without subsequent use of the gas for any purpose HB CC 2D062
  • E21F9/00
  • Devices preventing sparking of machines or apparatus (preventing sparking of electric machines or apparatus H01K, H02K) HB CC 2D062
  • E21F11/00
  • Rescue devices or other safety devices, e.g. safety chambers, escape ways (breathing aids for curative purposes A61H 31/00; respiratory apparatus A62B 7/00; revival apparatus A62B 33/00) HB CC 2D062
  • E21F13/00
  • Transport specially adapted to underground conditions (mine cars B61D; transport in general, loading B65G) HB CC 2D062

  • E21F15/00
  • Methods or devices for placing filling-up materials in underground workings (dams E21F 17/103) [6] HB CC 2D062
  • E21F16/00
  • Drainage (keeping dry foundation sites or other areas in the ground E02D 19/00) [2] HB CC 2D062
  • E21F17/00
  • Methods or devices for use in mines or tunnels, not covered elsewhere (mine lighting F21, H05B) [2] HB CC 2D062
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