Hongfei Ji

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Kunshan, CN

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Patents Grantslast 30 patents

Information Patent Grant
Bicycle sprocket assembly with chain protector
- Patent number 8,888,629
- Issue date Nov 18, 2014
- Shimano Inc.
- Hongfei Ji
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS

Patents Applicationslast 30 patents

Information Patent Application
BICYCLE SPROCKET ASSEMBLY WITH CHAIN PROTECTOR
- Publication number 20080289927
- Publication date Nov 27, 2008
- Shimano Inc.
- Hongfei Ji
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS