Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D634434 | Clip for hearing aid | Britta Pukall, Therese Naef, Jan Angst, Erich Dittli, Paul Portmann | 2011-03-15 |
| D615205 | Clip for hearing aid | Britta Pukall, Therese Naef, Jan Angst, Erich Dittli, Paul Portmann | 2010-05-04 |