Qiaoqiao CHENG

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Hangzhou, CN

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Patents Grantslast 30 patents

Information Patent Grant
Telephone set and method of controlling off-hook/on-hook state of t...
- Patent number 8,891,755
- Issue date Nov 18, 2014
- Huawei Technologies Co., Ltd.
- Qiaoqiao Cheng
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
TELEPHONE SET AND METHOD OF CONTROLLING OFF-HOOK/ON-HOOK STATE OF T...
- Publication number 20140105380
- Publication date Apr 17, 2014
- Huawei Technologies Co., Ltd
- Qiaoqiao CHENG
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
AUDIO SIGNAL PLAYBACK SYSTEM AND ELECTRONIC DEVICE
- Publication number 20140105417
- Publication date Apr 17, 2014
- Huawei Technologies Co., Ltd
- Qiaoqiao CHENG
- H04 - ELECTRIC COMMUNICATION TECHNIQUE