Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5157758 | Tungsten halogen lamp | Alex L. Halberstadt | 1992-10-20 |
| D291368 | Filter holder | Alex L. Halberstadt | 1987-08-11 |
| 4598194 | Quartz infra-red lamps | Alex L. Halberstadt | 1986-07-01 |
| 4556786 | Heating apparatus | Kenneth S. Frost, Alex L. Halberstadt | 1985-12-03 |