Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5667658 | Master for the duplication of sound recordings and process for its production | Hermann Koop, Bernd Hensel | 1997-09-16 |
| 5182001 | Process for coating substrates by means of a magnetron cathode | Michael Lubbehusen, Reiner Kukla, Siegfried BeiBwenger | 1993-01-26 |
| 5069772 | Apparatus for coating substrates by means of a magnetron cathode | Michael Lubbehusen, Reiner Kukla, Siegfried BeiBwenger | 1991-12-03 |