Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4839559 | Radiant energy incandescent lamp | Frederic F. Ahlgren, Rolf S. Bergman, John M. Davenport, Richard L. Hansler, Robert G. Hantman | 1989-06-13 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4839559 | Radiant energy incandescent lamp | Frederic F. Ahlgren, Rolf S. Bergman, John M. Davenport, Richard L. Hansler, Robert G. Hantman | 1989-06-13 |