Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8682017 | Method and system for equal acoustics porting | Deborah A. Gruenhagen, Karl F. Mueller | 2014-03-25 |
| 7933427 | Method and system for equal acoustics porting | Deborah A. Gruenhagen, Karl F. Mueller | 2011-04-26 |
| 7801571 | Multi-use acoustic leak path system | Joseph Friedman, David I. Blatt, Chun Leong Chong, Karl F. Mueller, Eric Penrod | 2010-09-21 |