Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6768473 | Antenna system and method | Michael Harland, William A. Kerkhoff, Rex L. Niekamp, Eric L. Power, Jeffrey H. Steinkamp | 2004-07-27 |
| 5108600 | Surface cleaning apparatus | John N. Koblanski | 1992-04-28 |