Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4597579 | Three-dimensional assembly puzzle with asymmetrical pieces that interlock interchangeably | — | 1986-07-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4597579 | Three-dimensional assembly puzzle with asymmetrical pieces that interlock interchangeably | — | 1986-07-01 |