E21F - CPC Classification Index

ClassID:

136246 ⎘

E21F - CPC Classification

Classification description:

Sub-classes:

E21F1/00 » Ventilation of mines or tunnels 21
E21F1/00 » Ventilation of mines or tunnels 21
E21F1/00 » Ventilation of mines or tunnels; Distribution of ventilating currents 21
E21F1/00 » Ventilation of mines or tunnels; Distribution of ventilating currents 21
E21F11/00 » Rescue devices or other safety devices, e.g. safety chambers, escape ways 55
E21F13/00 » Transport specially adapted to underground conditions 56
E21F15/00 » Methods or devices for placing filling-up materials in underground workings 25
E21F16/00 » Drainage 14
E21F17/00 » Methods or devices for use in mines or tunnels, not covered elsewhere 49
E21F3/00 » Cooling or drying of air 11
E21F5/00 » Safety devices ; Rescue devices 25
E21F5/00 » Safety devices ; Rescue devices 25
E21F5/00 » Means or methods for preventing, binding, depositing, or removing dust ; Preventing explosions or fires 25
E21F5/00 » Means or methods for preventing, binding, depositing, or removing dust ; Preventing explosions or fires 25
E21F7/00 » Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose 54
E21F9/00 » Devices preventing sparking of machines or apparatus 2