Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7764775 | Distributed intercom system | Donald R. Fletcher, Amy J. Hahne, William E. Bruggemeier, Matthew T. Miller | 2010-07-27 |
| 7151662 | Bracket element for a distribution device enclosure | Dale E. Pfeifer, John M. Liston | 2006-12-19 |