Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9726446 | Magazine for projectile launcher | Chun Wing Wong, Kin Fai Chang, Zgiant Zheng, Ying Si Lui, Donald A. Rosenwinkel +2 more | 2017-08-08 |
| 6132287 | Transforming tracked toy vehicle | Michael Parness, Nathan Bloch | 2000-10-17 |
| 5252101 | Simulated toy commode | Donald A. Rosenwinkel | 1993-10-12 |