Fire-alarm control panel having power frequency carrier

Details Fire-alarm control panel having power frequency carrier Fire-alarm control panel having power frequency carrier

2006-07-05

2008-11-25

Swarthout, Brent (Department: 2612)

Communications: electrical

Systems

Manual alarm telegraph; e.g., other than signal box type

C340S506000, C340S525000

Reexamination Certificate

active

07456728

ABSTRACT:
A fire-alarm control panel uses a transforming unit together with indoor power line for a fire alarm; and a signal for the fire alarm is transferred to another fire-alarm control panel in another place.

REFERENCES:
patent: 5650762 (1997-07-01), Takahashi et al.
patent: 6960987 (2005-11-01), Dohi et al.
patent: 7057517 (2006-06-01), Convery
patent: 7075444 (2006-07-01), Tanguay
patent: 7102504 (2006-09-01), Kates
patent: 7271704 (2007-09-01), McSheffrey et al.
patent: 2003/0052770 (2003-03-01), Mansfield et al.

Affiliated with

Also associated with

Rating

Fire-alarm control panel having power frequency carrier does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fire-alarm control panel having power frequency carrier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fire-alarm control panel having power frequency carrier will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4036790