Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6747995 | System for multiple voice lines with data over a single subscriber loop | Randall Brown, John Spenik, Christopher A. Pawlowski, Keith M. McDonald, James F. Hoff | 2004-06-08 |
| 4800721 | Force feedback lever | Richard A. Cemenska, Marvin P. Schneider | 1989-01-31 |