Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6005921 | Telephone ringback test device and method | David Keefe, Joseph E. Barron, Michael Kennedy, Roy Lujan Soto | 1999-12-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6005921 | Telephone ringback test device and method | David Keefe, Joseph E. Barron, Michael Kennedy, Roy Lujan Soto | 1999-12-21 |