Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7110743 | Communications device for a protective helmet | Larry Depew, Joseph Birli, Lou Monaco, Greg Skillicom, Dan Zimet +4 more | 2006-09-19 |
| 6481023 | Suspension for protective headgear | James A. Hendrickson, Glenn C. Davis, James G. Tomlinson, Paul A. Zeller | 2002-11-19 |
| 6443149 | Closed circuit escape breathing apparatus | — | 2002-09-03 |
| 6317895 | Safety helmet assembly | Richard A. Erth | 2001-11-20 |
| 6264392 | Pivot joint for faceshield assembly | James R. Tomlinson | 2001-07-24 |
| 5781118 | Self-contained breathing apparatus having a personal alert safety system integrated therewith | Peter Frank | 1998-07-14 |
| 5584289 | Breathing apparatus having a flexible manifold connected between a plurality of air cylinders | — | 1996-12-17 |
| 5027807 | Protective garment cooling device | David G. Aaron | 1991-07-02 |
| 4648394 | Facemask for abrasive service | — | 1987-03-10 |
| 4466432 | Air supplying hood | — | 1984-08-21 |
| 4231361 | Breathing apparatus flow device | — | 1980-11-04 |
| 4212846 | Breathing apparatus chemical canister with dust seal | — | 1980-07-15 |
| 4205673 | Breathing apparatus with an automatic firing mechanism | Robert F. Menold | 1980-06-03 |
| 4193507 | Cover for breathing apparatus canister | Robert F. Menold | 1980-03-18 |