Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6575120 | Animal control system | Norval Stapelfeld, Frederic T. Peterson | 2003-06-10 |
| 6467435 | Animal control system | Norval Stapelfeld, Frederic T. Peterson | 2002-10-22 |
| 6360698 | Animal control system | Norval Stapelfeld, Frederic T. Peterson | 2002-03-26 |