ChengYen Liu

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Shenzhen, CN

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Patents Applicationslast 30 patents

Information Patent Application
PHOTOGRAPHIC MASK AND METHOD FOR MAKING SAME
- Publication number 20170031238
- Publication date Feb 2, 2017
- AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) CO.,LTD.
- Linlin Wang
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY