Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7364011 | Attenuating power booster | John Duda, Fred Oran | 2008-04-29 |
| 4316522 | Acoustic filter silencer | — | 1982-02-23 |
| 4287962 | Packless silencer | Uno Ingard, James Morgan | 1981-09-08 |