Duanduan Jian

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Power supply device, a processing chip for a digital microphone and...
- Patent number 8,810,220
- Issue date Aug 19, 2014
- Beijing KT Micro, Ltd.
- Rongrong Bai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Power Supply Device, A Processing Chip for a Digital Microphone and...
- Publication number 20120086419
- Publication date Apr 12, 2012
- BEIJING KT MICRO, LTD.
- Rongrong Bai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE