Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5100358 | Coupling device for polygonal elements designed to form spatial structures and in particular polyhedral toys | — | 1992-03-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5100358 | Coupling device for polygonal elements designed to form spatial structures and in particular polyhedral toys | — | 1992-03-31 |