CA544753A - Systeme de telephone automatique a barre de traverse - Google Patents

Systeme de telephone automatique a barre de traverse

Info

Publication number
CA544753A
CA544753A CA544753A CA544753DA CA544753A CA 544753 A CA544753 A CA 544753A CA 544753 A CA544753 A CA 544753A CA 544753D A CA544753D A CA 544753DA CA 544753 A CA544753 A CA 544753A
Authority
CA
Canada
Prior art keywords
telephone system
automatic telephone
crossbar automatic
crossbar
telephone
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
CA544753A
Other languages
English (en)
Inventor
J. Murray Lawrence
D. Allum Robin
Davison Alan
Threadgold Ronald
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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
Publication date
Application granted granted Critical
Publication of CA544753A publication Critical patent/CA544753A/fr
Expired legal-status Critical Current

Links

CA544753A Systeme de telephone automatique a barre de traverse Expired CA544753A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA544753T

Publications (1)

Publication Number Publication Date
CA544753A true CA544753A (fr) 1957-08-13

Family

ID=35701924

Family Applications (1)

Application Number Title Priority Date Filing Date
CA544753A Expired CA544753A (fr) Systeme de telephone automatique a barre de traverse

Country Status (1)

Country Link
CA (1) CA544753A (fr)

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