Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808885 | Electric incandescent lamp for series arrangement having an electrically conductive vitreous body connecting oxide coated current-supply conductors | Wolf-Dieter Bauch, Rolf Gervelmeyer | 1989-02-28 |