Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9473838 | Dust protection of sound transducer | Petri Soronen, Heikki Juhani Huttunen, Marko Kelloniemi | 2016-10-18 |
| 8644530 | Dust protection of sound transducer | Petri Soronen, Heikki Juhani Huttunen, Marko Kelloniemi | 2014-02-04 |