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Liwei ZHANG
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Yingzhou Town Lingshui County, Hainan, CN
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Patents Grants
last 30 patents
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Patent Grant
Floating observation system
Patent number
11,584,481
Issue date
Feb 21, 2023
CETC Ocean Information Co., Ltd.
Xin Liang
H01 - BASIC ELECTRIC ELEMENTS
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last 30 patents
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Patent Application
FLOATING OBSERVATION SYSTEM
Publication number
20190084653
Publication date
Mar 21, 2019
CETC Ocean Information Co., Ltd.
Xin LIANG
B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT