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Patents Grantslast 30 patents

Information Patent Grant
Polymer speaker
- Patent number 8,958,581
- Issue date Feb 17, 2015
- Tokai Rubber Industries, Ltd.
- Takamasa Ito
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
POLYMER SPEAKER
- Publication number 20140003634
- Publication date Jan 2, 2014
- TOKAI RUBBER INDUSTRIES, LTD.
- Takamasa ITO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE