Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D441475 | Housing of emergency lighting fixture | Joseph S. Wegrzyn | 2001-05-01 |
| D426334 | Emergency lighting fixture | Joseph S. Wegrzyn | 2000-06-06 |
| 6045242 | Lighting fixture | Joseph S. Wegrzyn | 2000-04-04 |
| D419708 | Housing for an emergency lighting device | Richard Diachenko, John E. Studer | 2000-01-25 |
| D406279 | Combination emergency lighting device and exit sign | Richard Diachenko, David Evarts, Joseph S. Wegrzyn, John E. Studer | 1999-03-02 |
| D400991 | Emergency lighting heads | Richard Diachenko, John E. Studer | 1998-11-10 |
| D400995 | Emergency lighting fixture | Richard Diachenko, John E. Studer | 1998-11-10 |