Davidson; Curtis R.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Davidson; Curtis R..The latest application filed is for "plug-in speaker for emergency notification and voice evacuation".
- Davidson; Curtis R. - Oswego IL
| Patent | Date |
|---|---|
| Plug-in speaker for emergency notification and voice evacuation Grant 7,791,496 - Anderson , et al. September 7, 2 | 2010-09-07 |
| Plug-in alarm notification device Grant 7,602,308 - Anderson , et al. October 13, 2 | 2009-10-13 |
| Speaker strobe Grant D598,898 - Davidson August 25, 2 | 2009-08-25 |
| Alarm indicating output appliances Grant D574,283 - Anderson , et al. August 5, 2 | 2008-08-05 |
| Plug-In Speaker for Emergency Notification and Voice Evacuation App 20080157992 - Anderson; Douglas J. ; et al. | 2008-07-03 |
| Plug-In Alarm Notification Device App 20080074278 - Anderson; Douglas J. ; et al. | 2008-03-27 |
| Cover for surface mounted alarm unit Grant 7,183,483 - Anderson , et al. February 27, 2 | 2007-02-27 |
| Fastenerless connection for output device Grant 6,838,997 - Davidson January 4, 2 | 2005-01-04 |
| Selectable candela strobe unit Grant 6,522,261 - Scheffler , et al. February 18, 2 | 2003-02-18 |
| Selectable candela strobe unit App 20020075473 - Davidson, Curtis R. ; et al. | 2002-06-20 |
| Reversible speaker/strobe module Grant 6,127,935 - Davidson , et al. October 3, 2 | 2000-10-03 |
| Modular alarm unit Grant D424,465 - Davidson May 9, 2 | 2000-05-09 |
| Modular interchangeble cover system Grant 6,057,778 - Davidson May 2, 2 | 2000-05-02 |
| Wide-angle radiant energy detector Grant 5,200,624 - Pederson, Jr. , et al. April 6, 1 | 1993-04-06 |
| Infrared actuated control switch assembly Grant 4,873,469 - Young , et al. October 10, 1 | 1989-10-10 |
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