Issued Patents 2018
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10148800 | Acoustic compensation chamber for a remotely located audio device | Austin L. Frederickson, Timothy E. Sandrik, Mitchell Heschke | 2018-12-04 |
LH
Lee B. Hamstra
Overall (2018): #331,775 of 503,207Top 70%
1
Patents 2018