An apparatus for the detection and enunciation of hazardous conditions within an environment comprises at least two detection circuits positioned to sense ambient conditions within a home or business environment. One of the detection circuits senses the presence of smoke, and the other detection circuit...http://www.google.fr/patents/US20030098790?utm_source=gb-gplus-shareBrevet US20030098790 - Multicondition detection apparatus and method providing interleaved tone and verbal warnings
Multicondition detection apparatus and method providing interleaved tone and ...
Numéro de demande: 10/339,845 Numéro de publication: US 2003/0098790 A1 Date de dépôt: 10 janv. 2003 Brevet délivré: US6873254 ( Date de délivrance 29 mars 2005)
