Daejoon Cha

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Seoul, KR

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Patents Applicationslast 30 patents

Information Patent Application
Method and System for Determining Position of Terminal By Using Loc...
- Publication number 20070229355
- Publication date Oct 4, 2007
- Gyuyoung Han
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and system for monitoring mobile comunication terminal posit...
- Publication number 20060258365
- Publication date Nov 16, 2006
- SK Telecom Co., Ltd.
- Daejoon Cha
- H04 - ELECTRIC COMMUNICATION TECHNIQUE