Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5020163 | Earseal for sound-attenuating earcup assembly | Richard James Long | 1991-06-04 |
| 4905322 | Energy-absorbing earcup assembly | Richard James Long | 1990-03-06 |
| 4884301 | Combination chinstrap-napestrap assembly for helmet | — | 1989-12-05 |
| 4847920 | Dual-visor assembly for helmet | Richard James Long, Joseph J. Zaccone, James J. Petruzella | 1989-07-18 |
| 4748694 | Spring device for earcup assemblies of protective helmet | — | 1988-06-07 |
| RE32569 | Protective helmet | Leonard P. Frieder, Jr. | 1988-01-05 |
| 4523661 | Earphone system for use in large-cavity earcups | John P. Scalzo | 1985-06-18 |
| 4290149 | Method of making an individually fitted helmet | — | 1981-09-22 |
| 4239106 | Individually fitted helmet and method of and apparatus for making the same | — | 1980-12-16 |
| 4231117 | Helmet assembly for accurately positioning visual display system | — | 1980-11-04 |