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Controllable dry ice storing device for preventing left coal in worked out section from spontaneously combusting

Controllable dry ice storing device for preventing left coal in worked out section from spontaneously combusting

  • CN 102,322,283 A
  • Filed: 06/23/2011
  • Published: 01/18/2012
  • Est. Priority Date: 06/23/2011
  • Status: Active Application
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