Issued Patents All Time
Showing 26–41 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D372776 | Multi-cone earplug | — | 1996-08-13 |
| D371840 | Multi-cone earplug | — | 1996-07-16 |
| 5372278 | Earplug dispenser box | — | 1994-12-13 |
| 5322185 | Earplug dispenser system | — | 1994-06-21 |
| 5298691 | Soiling resistant banded earplug | — | 1994-03-29 |
| 5285925 | Rapid release box | — | 1994-02-15 |
| 5280845 | Earplug dispenser | — | 1994-01-25 |
| D341656 | Multi winged earplug | — | 1993-11-23 |
| D340282 | Earplug | — | 1993-10-12 |
| D335342 | Earplug | — | 1993-05-04 |
| D329897 | Winged earplug | — | 1992-09-29 |
| 4819624 | Banded earplug | Charles Leight, Frederic A. Leight | 1989-04-11 |
| 4774938 | Slow recovery earplug with largely impenetrable surface | — | 1988-10-04 |
| 4750669 | Container with resilient cover | — | 1988-06-14 |
| 4490857 | Band earplug | Alan Rosen | 1985-01-01 |
| 4434794 | Disposable ear plug | — | 1984-03-06 |