Assignee
No assignee recorded.
Inventors
- Letian Fan (2 patents)
- Guoping Zhang (56 patents)
- Unknown
- Jijun Ma (4 patents)
- Quanmei Guan (2 patents)
- Qinggang Zhang (5 patents)
- Peng Li (211 patents)
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Skip to contentUS Patent 9409580 · Granted Aug 9, 2016
No assignee recorded.