Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864582 | Gas laser tube and method for manufacturing the same | Heinz Barth, Erwin Hubner, Adolf Schneider | 1989-09-05 |
| 4803397 | Indirectly heated dispenser metal capillary cathode for electrical discharge devices | Josef Hauser, Erwin Hubner | 1989-02-07 |