Jiajia HAN

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Electronic business card information exchange method and device
- Patent number 10,333,356
- Issue date Jun 25, 2019
- ORA INC.
- Lei Ding
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
ELECTRONIC BUSINESS CARD INFORMATION EXCHANGE METHOD AND DEVICE
- Publication number 20170279314
- Publication date Sep 28, 2017
- Lei DING
- G06 - COMPUTING CALCULATING COUNTING