Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5267732 | Wall mounted sliding block puzzle | Walter Lee Bowen, Peter K. Ephland | 1993-12-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5267732 | Wall mounted sliding block puzzle | Walter Lee Bowen, Peter K. Ephland | 1993-12-07 |