Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6484842 | Custom-molded ear-plug, and process for producing a custom-molded ear-plug device | Christoph Widmer, Markus Weidmann | 2002-11-26 |
| 6401859 | Custom-molded ear-plug, and process for producing a custom-molded ear-plug device | Christoph Widmer, Markus Weidmann | 2002-06-11 |