Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7677529 | Electromechanical oxygen valve and regulator | Robert Collins | 2010-03-16 |
| 6988509 | Riser line shutoff valve | Robert Frampton, Glenn Maslowsky | 2006-01-24 |
| 6666226 | Series/parallel relief valve for use with aircraft gaseous oxygen system | Lawrence Gill, Gary Thomasulo, Glenn Maslowsky | 2003-12-23 |
| 6612334 | Gas shutoff valve having a positive open indicator | Daniel Korpanty, Christopher Lanza, Oliver Berry | 2003-09-02 |
| 6466681 | Weather resistant sound attenuating modular communications headset | Timothy J. Sopko | 2002-10-15 |
| 5697099 | Helmet with an alarm | Timothy J. Sopko, Vernon C. Lenz | 1997-12-16 |
| 5492110 | Switched alert circuit for fireman's breathing system | Vernon C. Lenz | 1996-02-20 |
| 5464413 | Nose clip | Vernon C. Lenz | 1995-11-07 |
| 5453585 | Cable retraction system | Vernon C. Lenz | 1995-09-26 |
| 5159641 | Microphone circuit control mechanism for breathing apparatus | Timothy J. Sopko, Vernon C. Lenz | 1992-10-27 |