Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D504705 | Combination exit sign and emergency lighting unit | Khosrow Jamasbi, David W. Knoble, Charles Kelpin | 2005-05-03 |
| D489766 | Exit sign | Khosrow Jamasbi, David W. Knoble, Charles Kelpin | 2004-05-11 |