Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873471 | High frequency ballast for gaseous discharge lamps | Thomas E. Dean, William H. Henrich, David Matthew Fischer, Herbert E. Pietsch | 1989-10-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873471 | High frequency ballast for gaseous discharge lamps | Thomas E. Dean, William H. Henrich, David Matthew Fischer, Herbert E. Pietsch | 1989-10-10 |