Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6636592 | Method and system for using bad billed number records to prevent fraud in a telecommunication system | Dean C. Marchand | 2003-10-21 |
| 6618475 | Domestic origination to international termination country set logic | Dean C. Marchand | 2003-09-09 |
| 6590967 | Variable length called number screening | Dean C. Marchand | 2003-07-08 |
| 6556669 | International origination to domestic termination call blocking | Dean C. Marchand | 2003-04-29 |