Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4754373 | Automotive headlamp | Walter J. Kosmatka, Frank E. Zalar | 1988-06-28 |
| 4638208 | Sandblasted incandescent lamps with an improved neck section | — | 1987-01-20 |
| 4588923 | High efficiency tubular heat lamps | Leonard E. Hoegler | 1986-05-13 |
| 4517491 | Incandescent lamp source utilizing an integral cylindrical transparent heat mirror | John H. Ingold, Rolf S. Bergman | 1985-05-14 |