Douglas C. Eisold

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San Diego, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Disaster alert device and system
- Patent number 7,515,041
- Issue date Apr 7, 2009
- Trex Enterprises Corp.
- Douglas C. Eisold
- G08 - SIGNALLING

Patents Applicationslast 30 patents

Information Patent Application
Disaster alert device, system and method
- Publication number 20070296575
- Publication date Dec 27, 2007
- TREX ENTERPRISES CORP
- Douglas C. Eisold
- G08 - SIGNALLING
Information Patent Application
Disaster alert device and system
- Publication number 20070252688
- Publication date Nov 1, 2007
- TREX ENTERPRISES CORPORATION
- Douglas C. Eisold
- G08 - SIGNALLING