New choke air-proof block

New choke air-proof block

CN
  • CN 2,918,699 Y
  • Filed: 06/27/2006
  • Issued: 07/04/2007
  • Est. Priority Date: 06/27/2006
  • Status: Active Grant
First Claim
Patent Images

1. , novel wind blocking air-proof block mainly is made up of stand for a long while sheet and firm banking of elasticity, it is characterized in that:

  • stand for a long while sheet and firm banking of described elasticity is split-type structural, and the elasticity sheet of standing for a long while is fixed on the firm banking.

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