Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6794986 | Access control method and apparatus for members and guests | Tianning Xu, David M. Tumey | 2004-09-21 |
| 6728341 | Monitoring and communication system for stationary and mobile persons | Nicholas J. Webb | 2004-04-27 |