Yu Chun Wan

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Sindian City, TW

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Patents Grantslast 30 patents

Information Patent Grant
Management system and method for wireless communication network and...
- Patent number 8,549,406
- Issue date Oct 1, 2013
- Groundhog Technologies Inc
- Wei Ling Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Management system and method for wireless communication network and...
- Publication number 20080109731
- Publication date May 8, 2008
- GROUNDHOG TECHNOLOGIES INC.
- Wei Ling Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE