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COMPOUND MEMBRANE AND ACOUSTIC DEVICE USING SAME

  • US 20140083795A1
  • Filed: 09/23/2013
  • Published: 03/27/2014
  • Est. Priority Date: 09/26/2012
  • Status: Active Grant
First Claim
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1. A compound membrane comprising:

  • a polyetherimide film; and

    a thermoplastic polyurethance elastomer attached to one surface of the polyetherimide film.

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