Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8512820 | Organic ionic phenylpyrimidine compounds and displays formed thereof | Yongqiang Zhang | 2013-08-20 |
| 5537715 | Twin caster of crib and the like | — | 1996-07-23 |
| 5355550 | Pivoting castor | — | 1994-10-18 |
| 5259088 | Twin caster with a biased sustaining element | — | 1993-11-09 |