CA501005A - Subscription type signalling system - Google Patents

Subscription type signalling system

Info

Publication number
CA501005A
CA501005A CA501005A CA501005DA CA501005A CA 501005 A CA501005 A CA 501005A CA 501005 A CA501005 A CA 501005A CA 501005D A CA501005D A CA 501005DA CA 501005 A CA501005 A CA 501005A
Authority
CA
Canada
Prior art keywords
signalling system
subscription type
type signalling
subscription
type
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
CA501005A
Other languages
French (fr)
Inventor
M. Roschke Erwin
W. Crotty Francis
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.)
Zenith Electronics LLC
Original Assignee
Zenith Radio Corp
Publication date
Application granted granted Critical
Publication of CA501005A publication Critical patent/CA501005A/en
Expired legal-status Critical Current

Links

CA501005A Subscription type signalling system Expired CA501005A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA501005T

Publications (1)

Publication Number Publication Date
CA501005A true CA501005A (en) 1954-03-23

Family

ID=35646899

Family Applications (1)

Application Number Title Priority Date Filing Date
CA501005A Expired CA501005A (en) Subscription type signalling system

Country Status (1)

Country Link
CA (1) CA501005A (en)

Similar Documents

Publication Publication Date Title
CA501005A (en) Subscription type signalling system
CA504867A (en) Selective calling system
CA502773A (en) Signaling system
CA503175A (en) Signaling system
CA506675A (en) Signaling system
CA503237A (en) Selective signaling system
CA499772A (en) Signaling systems
CA502785A (en) Subscriber signalling system
CA502786A (en) Subscriber signalling system
CA504719A (en) Subscriber signalling systems
CA504718A (en) Subscriber signalling systems
CA500171A (en) Electric signalling systems
CA508370A (en) Image-reconstructing system
CA500825A (en) Switching 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
CA505804A (en) Telephone signalling system
CA504711A (en) Alarm signaling system
AU211308B2 (en) Signalling system
CA504827A (en) Multi-channel signalling systems
CA500704A (en) Multi-channel signalling systems
CA506618A (en) Indicating system