Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D397705 | Spherical binoculars | Jianmin Yang | 1998-09-01 |
| D374678 | Football-shaped telescope | Jianmin Yang | 1996-10-15 |
| D374680 | Football-shaped binoculars | Jianmin Yang | 1996-10-15 |