Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5681233 | Inflatable game ball with sponge rubber carcass | Douglas G. Guenther, Bradley L. Gaff, San-Fu Yang | 1997-10-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5681233 | Inflatable game ball with sponge rubber carcass | Douglas G. Guenther, Bradley L. Gaff, San-Fu Yang | 1997-10-28 |