CA512081A - Systemes de central automatique de telephone - Google Patents

Systemes de central automatique de telephone

Info

Publication number
CA512081A
CA512081A CA512081A CA512081DA CA512081A CA 512081 A CA512081 A CA 512081A CA 512081 A CA512081 A CA 512081A CA 512081D A CA512081D A CA 512081DA CA 512081 A CA512081 A CA 512081A
Authority
CA
Canada
Prior art keywords
telephone exchange
automatic telephone
exchange systems
systems
automatic
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
CA512081A
Other languages
English (en)
Inventor
W. Graybill Kenneth
Sengebusch Hans
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.)
Nortel Networks Ltd
Original Assignee
Northern Electric Co Ltd
Publication date
Application granted granted Critical
Publication of CA512081A publication Critical patent/CA512081A/fr
Expired legal-status Critical Current

Links

CA512081A Systemes de central automatique de telephone Expired CA512081A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA512081T

Publications (1)

Publication Number Publication Date
CA512081A true CA512081A (fr) 1955-04-19

Family

ID=35663153

Family Applications (1)

Application Number Title Priority Date Filing Date
CA512081A Expired CA512081A (fr) Systemes de central automatique de telephone

Country Status (1)

Country Link
CA (1) CA512081A (fr)

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