Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6766878 | Custom-moulded ear-plug, and process for producing a custom-moulded ear-plug device | Christoph Widmer, Hans Hessel | 2004-07-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6766878 | Custom-moulded ear-plug, and process for producing a custom-moulded ear-plug device | Christoph Widmer, Hans Hessel | 2004-07-27 |