Yifang Sun

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Qingdao, CN

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Patents Grantslast 30 patents

Information Patent Grant
Play control system and method
- Patent number 8,917,356
- Issue date Dec 23, 2014
- Haier Group Corporation
- Jianwei Guo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Play Control System And Method
- Publication number 20140036155
- Publication date Feb 6, 2014
- QINGDAO HAIER ELECTRONICS CO., LTD.
- Jianwei Guo
- G06 - COMPUTING CALCULATING COUNTING