CA504711A - Alarm signaling system - Google Patents

Alarm signaling system

Info

Publication number
CA504711A
CA504711A CA504711A CA504711DA CA504711A CA 504711 A CA504711 A CA 504711A CA 504711 A CA504711 A CA 504711A CA 504711D A CA504711D A CA 504711DA CA 504711 A CA504711 A CA 504711A
Authority
CA
Canada
Prior art keywords
signaling system
alarm signaling
alarm
signaling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA504711A
Other languages
French (fr)
Inventor
E. Clutts Charles
A. Pullis George
K. Schenck Alfred
A. Weber Laurance
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA504711A publication Critical patent/CA504711A/en
Expired legal-status Critical Current

Links

CA504711A Alarm signaling system Expired CA504711A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA504711T

Publications (1)

Publication Number Publication Date
CA504711A true CA504711A (en) 1954-07-27

Family

ID=35650633

Family Applications (1)

Application Number Title Priority Date Filing Date
CA504711A Expired CA504711A (en) Alarm signaling system

Country Status (1)

Country Link
CA (1) CA504711A (en)

Similar Documents

Publication Publication Date Title
CA504711A (en) Alarm signaling system
CA502773A (en) Signaling system
CA503175A (en) Signaling system
CA506675A (en) Signaling system
CA499772A (en) Signaling systems
CA503237A (en) Selective signaling system
CA504867A (en) Selective calling system
CA505876A (en) Telephone signaling system
CA505804A (en) Telephone signalling system
CA502242A (en) Electrical signalling systems
CA504593A (en) Electrical signalling systems
CA504775A (en) Electrical signalling systems
CA508100A (en) Electrical signalling systems
CA508101A (en) Electrical signalling systems
CA504704A (en) Railway signaling systems
CA514960A (en) Burglar alarm system
CA490045A (en) Alarm systems
CA501005A (en) Subscription type signalling system
CA490775A (en) Signaling system
CA494330A (en) Radio-wire signaling system
CA500171A (en) Electric signalling systems
CA500704A (en) Multi-channel signalling systems
CA504827A (en) Multi-channel signalling systems
CA502192A (en) Emergency stop flasher signal system
CA503317A (en) Fire alarm systems