Yun Seok Choi

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Daegu, KR

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Patents Grantslast 30 patents

Information Patent Grant
Asymmetric elliptical chain gear for a bicycle
- Patent number 9,074,682
- Issue date Jul 7, 2015
- Yun Seok Choi
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS

Patents Applicationslast 30 patents

Information Patent Application
ASYMMETRICAL ELLIPTICAL CHAINRING FOR CLIPLESS PEDAL
- Publication number 20200010147
- Publication date Jan 9, 2020
- Yun Seok Choi
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Application
ASYMMETRIC ELLIPTICAL CHAIN GEAR FOR A BICYCLE
- Publication number 20140221139
- Publication date Aug 7, 2014
- Yun Seok Choi
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS