Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5762335 | Two handed puzzle having a solution requiring a predetermined orientation of the hands | — | 1998-06-09 |
| 4682557 | Sailing wing | Robert L. Crowell | 1987-07-28 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5762335 | Two handed puzzle having a solution requiring a predetermined orientation of the hands | — | 1998-06-09 |
| 4682557 | Sailing wing | Robert L. Crowell | 1987-07-28 |