Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D450660 | Single pole arc fault circuit breaker | Raymond K. Seymour, Michael C. Guerrette, Douglas B. Tilghman, Frederick W. Glabau, Henry Hall Mason, Jr. +1 more | 2001-11-20 |
| 6259340 | Circuit breaker with a dual test button mechanism | Kevin J. Fuhr, Ray Seymour, Doug Tilghman | 2001-07-10 |