Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6895960 | Modular respirators and a method of conversion thereof | — | 2005-05-24 |
| 6298498 | Protective helmet system | James A. Burns, Floyd L. Foslien, William A. Mittelstadt | 2001-10-09 |
| 6035451 | Protective helmet system with cam for attaching first and second face shields thereto | James A. Burns, Floyd L. Foslien, William A. Mittelstadt | 2000-03-14 |
| D421118 | Inlet port adaptor on a full-face respirator lens | Joseph G. Reischel, Michael Bartholomew, David P. Knivsland | 2000-02-22 |
| 5991072 | Light filtering lens film | Alan J. Solyntjes | 1999-11-23 |
| 5619988 | First stage pressure regulator for emergency breathing apparatus | Robert J. Mattila | 1997-04-15 |