Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5790633 | System for proactively maintaining telephone network facilities in a public switched telephone network | William C. Casey, Frederick D. Blum, Mary A. Youngs | 1998-08-04 |
| 5790634 | Combination system for proactively and reactively maintaining telephone network facilities in a public switched telephone system | William C. Casey, Frederick D. Blum, Mary A. Youngs | 1998-08-04 |
| 5687212 | System for reactively maintaining telephone network facilities in a public switched telephone network | William C. Casey, Frederick D. Blum, Mary A. Youngs | 1997-11-11 |