Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8295505 | Earphone with controllable leakage of surrounding sound and device therefor | Erwin Weinans, Rene Hin, Gerjo Sampimon | 2012-10-23 |
| 4792329 | Multi-compartment syringe | — | 1988-12-20 |