Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6760420 | Telephony security system | Craig Heilmann, Mark Collier, Doug Conyers, Keith S. Pickens, David Buntin +4 more | 2004-07-06 |
| 6760421 | Telephony security system | Craig Heilmann | 2004-07-06 |
| 6718024 | System and method to discriminate call content type | Craig Heilmann, David Buntin, Greg Schmid, Robert A. Applonie, Keith S. Pickens | 2004-04-06 |