Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7415961 | Piston for internal combustion engine, compressor or the like | Deheng Wang | 2008-08-26 |
| 6616640 | Syringe with plunger anti-detachment mechanism | — | 2003-09-09 |
| 6206857 | Syringe with needle retraction arrangement | — | 2001-03-27 |