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Adjustable variable-voltage partial pressure chamber cavity used for firework-setoff range control device

Adjustable variable-voltage partial pressure chamber cavity used for firework-setoff range control device

CN
  • CN 201,387,283 Y
  • Filed: 04/17/2009
  • Issued: 01/20/2010
  • Est. Priority Date: 04/17/2009
  • Status: Active Grant
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