Signalling of the alarm condition to a substation whose identity is signalled

Official title: {Signalling of the alarm condition to a substation whose identity is signalled to a central station, e.g. relaying alarm signals in order to extend communication range}

G08B25/009 (Signalling of the alarm condition to a substation whose identity is signalled) appears on 1,191 US grants and 1,391 published applications in this corpus.