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LEAD-LOADED MICROPOROUS ACOUSTIC PANEL

  • US 3,602,332 A
  • Filed: 01/08/1969
  • Issued: 08/31/1971
  • Est. Priority Date: 01/08/1969
  • Status: Expired due to Term
First Claim
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2. The barrier of claim 1 wherein said finely divided lead particles comprise particles of lead oxide.

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