Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12409287 | Tracheostomy valve comprising a flexible membrane | Daniel EKEBERG | 2025-09-09 |
| 7210476 | Breathing-speaking valve | — | 2007-05-01 |
| 5201309 | Breathing aid for laryngotomy tracheostomy patients | Roland Friberg | 1993-04-13 |