Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4359224 | Manipulative fluid-filled game | John W. Spirk | 1982-11-16 |
| D264856 | Kaleidoscope | John W. Spirk | 1982-06-08 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4359224 | Manipulative fluid-filled game | John W. Spirk | 1982-11-16 |
| D264856 | Kaleidoscope | John W. Spirk | 1982-06-08 |