TREA

Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose

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Industry

  • CPC
  • E21F7/00
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS

Current Industry

E21F7/00Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
Industries