Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6904147 | Releaseable hardhat mount for speaker/mike | Chris Roose | 2005-06-07 |
| D464953 | Winged hardhat speaker or mike mount | Chris Roose | 2002-10-29 |
| D464954 | Hardhat cushion attached speaker or mike mount | Chris Roose | 2002-10-29 |
| D464955 | Hardhat lip speaker or mike mount | Chris Roose | 2002-10-29 |
| 6311052 | PTT radio system | — | 2001-10-30 |
| 5850172 | Emergency service rescue marker | Carey L. Moore | 1998-12-15 |
| 5697099 | Helmet with an alarm | William D. Siska, Jr., Timothy J. Sopko | 1997-12-16 |
| 5492110 | Switched alert circuit for fireman's breathing system | William D. Siska, Jr. | 1996-02-20 |
| 5464413 | Nose clip | William D. Siska, Jr. | 1995-11-07 |
| 5453585 | Cable retraction system | William D. Siska, Jr. | 1995-09-26 |
| 5216418 | Emergency service rescue marker | Carey L. Moore | 1993-06-01 |
| 5159641 | Microphone circuit control mechanism for breathing apparatus | Timothy J. Sopko, William D. Siska, Jr. | 1992-10-27 |
| 5144678 | Automatically switched headset | — | 1992-09-01 |
| 5101504 | Shoulder activated headset | — | 1992-03-31 |
| 4258231 | Remote line switching extension for telephone exchange | William H. Draeger, Ronald J. Surprenant | 1981-03-24 |