SHANGHAI CHUNGRONG SPRING CO., LTD.

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Shanghai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Telescopic bracket and open-up device using the same
- Patent number 11,536,418
- Issue date Dec 27, 2022
- SHANGHAI CHUNGRONG SPRING CO., LTD.
- Hsin-Yung Lin
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

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Patents Applicationslast 30 patents

Information Patent Application
TELESCOPIC BRACKET AND OPEN-UP DEVICE USING THE SAME
- Publication number 20200340619
- Publication date Oct 29, 2020
- Shanghai Chungrong Spring Co.,LTD.
- Hsin-Yung LIN
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES