Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4751105 | Method for producing circuit boards | Gunter Kisters | 1988-06-14 |
| 4430154 | Method of producing printed circuit boards | Horst Steffen | 1984-02-07 |
| 4374868 | Method for producing printed circuit boards with punched holes having metallized walls | Horst Steffen | 1983-02-22 |
| 4208255 | Process and device for the production of metal-complex compounds suitable for electroless metal deposition | Horst Steffen | 1980-06-17 |