Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4260347 | Apparatus for producing spacer frames for insulating glass window structures | Rolf Sawatzki, Joachim Heienbrock, Friedrich Halberschmidt, Josef Audi, Norbert Schwarzenberg | 1981-04-07 |