Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4799255 | Communication facilities access control arrangement | Randy J. Billinger, Laurel K. Dotter | 1989-01-17 |
| 4769834 | Inter-exchange carrier access | Randy J. Billinger, Laurel K. Dotter, Donna W. Herrick, Sidney Johnson | 1988-09-06 |