Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5555290 | Long distance telephone switching system with enhanced subscriber services | Steven J. Hogan, Kristi T. Feltz, Douglas R. Murdock, Van E. Hanson | 1996-09-10 |
| 5550899 | Long distance telephone switching system with enhanced subscriber services | Steven J. Hogan, Kristi T. Feltz, Douglas R. Murdock, Van E. Hanson | 1996-08-27 |
| 5222120 | Long distance telephone switching system with enhanced subscriber services | Steven J. Hogan, Kristi T. Feltz, Douglas R. Murdock, Van E. Hanson | 1993-06-22 |