Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7987487 | Universal external multimedia adapter for use in a vehicle | Michael T. Burk, Bruce E. Kerkemeyer | 2011-07-26 |
| 4852087 | Receiver data gate with automatic gain control | — | 1989-07-25 |
| 4674083 | Time division multiplexed switching structure for PBX | — | 1987-06-16 |