Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4360546 | Electrical discharge lamp envelope | Josef Grabmaier | 1982-11-23 |
| 4345180 | Envelope for metal halide discharge lamp with protective layer containing B.sub.2 O.sub.3 | Josef Grabmaier | 1982-08-17 |
| 4312653 | Process for the production of a coated glass body | Alfred Papp | 1982-01-26 |