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last 30 patents
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Patent Grant
Positioning light beam emission system, method and indoor positioni...
Patent number
11,181,610
Issue date
Nov 23, 2021
BEIJING GUO CHENG WAN TONG INFORMATON TECHNOLOGY CO., LTD
Rongsheng Dong
G01 - MEASURING TESTING
Information
Patent Grant
Positioning light beam emission system, method and indoor positioni...
Patent number
10,725,147
Issue date
Jul 28, 2020
BEIJING GUO CHENG WAN TONG INFORMATION TECHNOLOGY CO., LTD
Rongsheng Dong
G01 - MEASURING TESTING
Patents Applications
last 30 patents
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Patent Application
POSITIONING LIGHT BEAM EMISSION SYSTEM, METHOD AND INDOOR POSITIONI...
Publication number
20190072639
Publication date
Mar 7, 2019
Guo Cheng Wan Tong Information Technology Co., LTD
Rongsheng Dong
G01 - MEASURING TESTING
Information
Patent Application
POSITIONING LIGHT BEAM EMISSION SYSTEM, METHOD AND INDOOR POSITIONI...
Publication number
20190041490
Publication date
Feb 7, 2019
Guo Cheng Wan Tong Information Technology Co., LTD
Rongsheng Dong
G01 - MEASURING TESTING