Dan Kaufman

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Toronto, CA

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Patents Grantslast 30 patents

Information Patent Grant
Mobile communication device with receiver speaker
- Patent number 8,699,963
- Issue date Apr 15, 2014
- BlackBerry Limited
- Chao Chen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Mobile Communication Device with Receiver Speaker
- Publication number 20130078930
- Publication date Mar 28, 2013
- Research in Motion Limited
- Chao Chen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE