Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D671273 | Hearing protector | Lars G. E. Carlborg, Leif Johansson, Martin Birath, August Michael, Oskar Juhlin | 2012-11-20 |
| D668392 | Hearing protector | Lars G. E. Carlborg, Leif Johansson, Martin Birath, August Michael, Oskar Juhlin | 2012-10-02 |