Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D648899 | Safety helmet | — | 2011-11-15 |
| D544650 | Protective ear cup | — | 2007-06-12 |
| D435645 | Ear plug | — | 2000-12-26 |
| D412976 | Head band hearing protector | — | 1999-08-17 |
| D408526 | Ear plug | — | 1999-04-20 |
| D385665 | Pair of ear cups | — | 1997-10-28 |
| D381414 | Head band hearing protector | — | 1997-07-22 |
| D375584 | Ear cup | — | 1996-11-12 |
| 4314553 | Earplug and earplug set | — | 1982-02-09 |