Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4569166 | Construction including a supported element of extruded synthetic resin | Hans-Peter Buchmuller, Klaus Kerk | 1986-02-11 |
| 4515648 | Method of making a gastight multiple-walled plastic panel | Walter Hellmann, Otmar Krajec, Hartmut Schikowsky, Heinz Vetter | 1985-05-07 |