Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D632654 | Output device back box | Curtis R. Davidson, Luis Arturo Quevedo Sierra | 2011-02-15 |
| 7791496 | Plug-in speaker for emergency notification and voice evacuation | Douglas J. Anderson, Curtis R. Davidson | 2010-09-07 |
| 7602308 | Plug-in alarm notification device | Douglas J. Anderson, Curtis R. Davidson | 2009-10-13 |
| D568194 | Notification devices | Jeffrey Michael Klein | 2008-05-06 |
| 7183483 | Cover for surface mounted alarm unit | Douglas J. Anderson, Curtis R. Davidson | 2007-02-27 |
| D505632 | Housing for a detector | Dale H. Johnson, James R. Stach | 2005-05-31 |