Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6309584 | Method for producing profiled sections coated with lubricating lacquer for use in the building industry, and profiled section coated with the lubricating lacquer | Werner Berens | 2001-10-30 |
| 5885670 | Conventional direct glazing | Andreas Schafer | 1999-03-23 |
| 5592975 | Glide tube ring for tube-in-tube systems | Friedbert Wissmann, Bernd Skerra | 1997-01-14 |