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Immersed-Membrane Water Treating Filtering Device Comprising Means Preventing Filterable Medium Backflowing to Filter Cleaning Gas Injecting Means

  • US 20080035563A1
  • Filed: 04/27/2005
  • Published: 02/14/2008
  • Est. Priority Date: 04/29/2004
  • Status: Abandoned Application
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1-35. -35. (canceled)

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