Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D388448 | Magnifier lens | — | 1997-12-30 |
| D368988 | Swivel arm attachment for a helmet | — | 1996-04-16 |
| D361127 | Support belt for a headband for ear noise reduction | — | 1995-08-08 |
| D298476 | Visor frame for a protective helmet | — | 1988-11-08 |
| D287300 | Face shield attachment for a safety helmet | — | 1986-12-23 |
| 4615050 | Headband structure for ear coverings | — | 1986-10-07 |
| D277237 | Holder for fitting an accessory, especially an ear muff, to a safety helmet | — | 1985-01-22 |
| D271571 | Contact pressure measuring a device | — | 1983-11-29 |
| 4391000 | Ear muff mounting device | — | 1983-07-05 |
| D267440 | Ear muff attachment for a safety helmet | — | 1983-01-04 |
| D265945 | Support for ear protector | — | 1982-08-31 |
| D263093 | Support for an ear protector | — | 1982-02-23 |
| D262326 | Holder for mounting equipment on a safety helmet | — | 1981-12-22 |
| 4287614 | Fastening means for fitting an accessory, especially an ear muff, to a safety helmet | — | 1981-09-08 |
| D255170 | Support for an ear protector | — | 1980-06-03 |
| D255058 | Support for ear protector | — | 1980-05-27 |
| D254996 | Support for an ear protector | — | 1980-05-20 |