Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5051660 | Circuit arrangement for operating a gas discharge lamp on a direct-current source | Helmut Domann | 1991-09-24 |
| 4816979 | Circuit for regulating the high-voltage supply of an electrostatic filter | Helmut Domann, Karl-Heinz Hagele | 1989-03-28 |
| 4639822 | Arrangement for rapid switching of an electromagnetic load | Hans Kubach | 1987-01-27 |
| 4293812 | Controlled d-c current supply system, with controlled current flow through a choke | Hans Kubach | 1981-10-06 |