IP Library › Granted Patent US 6,532,296
Granted Patent Utility
US 6,532,296 · App. 09/123,973

Active noise reduction audiometric headphones

Inventors: Michael A. Vaudrey, William R. Saunders
Patented Case View Patent ↗
Granted: Mar 11, 2003 Filed: Jul 29, 1998
Inventors
Michael A. Vaudrey
William R. Saunders

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Quick Facts
Patent No.
US 6,532,296
App. No.
09/123,973
Filed
1998-07-29
Granted
2003-03-11
Kind
B1