Guoji Yuan

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Foshan, CN

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Patents Grantslast 30 patents

Information Patent Grant
Single armed trailer coupler locking device
- Patent number 9,796,229
- Issue date Oct 24, 2017
- Guoji Yuan
- B60 - VEHICLES IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
SINGLE-ARMED TRAILER COUPLER LOCKING DEVICE
- Publication number 20150121975
- Publication date May 7, 2015
- Guoji Yuan
- B60 - VEHICLES IN GENERAL
Information Patent Application
TRAILER COUPLER LOCKING DEVICE
- Publication number 20150123379
- Publication date May 7, 2015
- Guoji Yuan
- B60 - VEHICLES IN GENERAL