Yung Tay Yu

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Chen Kuan City, CN

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Patents Grantslast 30 patents

Information Patent Grant
Electric scooter power switching device
- Patent number 6,634,452
- Issue date Oct 21, 2003
- Chaw Khong Technology Co., Ltd.
- Tung-Chao Cheng
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS

Patents Applicationslast 30 patents

Information Patent Application
Electric scooter power switching device
- Publication number 20020092688
- Publication date Jul 18, 2002
- CHAW KHONG TECHNOLOGY CO., LTD.
- Tung-Chao Cheng
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS