Chunpeng CAO

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Qingdao, Shandong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Method for connecting a connection piece to a u-shaped ring anchor...
- Patent number 11,964,443
- Issue date Apr 23, 2024
- CRRC Qingdao Sifang Co., Ltd.
- Jian Du
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR CONNECTING A CONNECTION PIECE TO A U-SHAPED RING ANCHOR...
- Publication number 20200001554
- Publication date Jan 2, 2020
- CRRC QINGDAO SIFANG CO., LTD.
- Jian DU
- B61 - RAILWAYS