Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4748376 | Halogen lamp fill mixture which reduces lower operating temperature of halogen cycle | Mark D. Beschle | 1988-05-31 |
| 4629936 | Tungsten-halogen lamp with means for reducing filament embrittlement | Mark D. Beschle | 1986-12-16 |