Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5403999 | Telecommunications systems for lotteries | John K. Entenmann, John A. Hooke, Eric Edward Kampmeier | 1995-04-04 |
| 4996705 | Use of telecommunications systems for lotteries | John K. Entenmann, John A. Hooke, Eric Edward Kampmeier | 1991-02-26 |
| 4653043 | Pre-cutover verification of switching system subscriber lines served via digital carrier facilities | Patrick K. Brady, Cecilia Chen, Gilbert Mark Stewart | 1987-03-24 |