Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9759001 | Rotary-leaf/-casement drive | Ivan Wismer, Ernst Burri | 2017-09-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9759001 | Rotary-leaf/-casement drive | Ivan Wismer, Ernst Burri | 2017-09-12 |