Qunsheng Liu

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Elmhurst, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Headset with integrated stereo array microphone
- Patent number 8,542,843
- Issue date Sep 24, 2013
- Andrea Electronics Corporation
- Douglas Andrea
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Headset with flashing light emitting diodes
- Patent number 7,319,762
- Issue date Jan 15, 2008
- Andrea Electronics Corporation
- Douglas J. Andrea
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
HEADSET WITH INTEGRATED STEREO ARRAY MICROPHONE
- Publication number 20090268931
- Publication date Oct 29, 2009
- Douglas ANDREA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE