Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876482 | Halogen cycle incandescent lamp structure | — | 1989-10-24 |
| 4812710 | Halogen incandescent lamp with high reliability filament connection, and method of manufacture | Rudiger Klam, Rupert Muhlberger | 1989-03-14 |