Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D890719 | Loudspeaker | Michael Eckstein | 2020-07-21 |
| D881158 | Loudspeaker | Michael Eckstein | 2020-04-14 |
| D857646 | Audio amplifier | Michael Eckstein | 2019-08-27 |
| 4897888 | Helmet strap clip, and assembly | Lester Broersma | 1990-02-06 |