Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4226470 | Convertible couch or chair | Franz Wittmann | 1980-10-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4226470 | Convertible couch or chair | Franz Wittmann | 1980-10-07 |