Lou Dafu

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Ottawa, CA

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Patents Grantslast 30 patents

Information Patent Grant
Security access device and method
- Patent number 9,454,657
- Issue date Sep 27, 2016
- BCE Inc.
- Tet Hin Yeap
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Security access device and method
- Publication number 20060123463
- Publication date Jun 8, 2006
- Tet Hin Yeap
- G06 - COMPUTING CALCULATING COUNTING