Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4898554 | Method of and equipment for ageing a low-pressure hot-cathode discharge light source, particularly a fluorescent lamp | Kalman Antal, Ferenc Halasz | 1990-02-06 |
| 4861302 | Process for flushing and filling a low pressure gas discharge light source | Kalman Antal, Laszlo Ugrosdy | 1989-08-29 |