CA295614A - Telephone exchange system - Google Patents

Telephone exchange system

Info

Publication number
CA295614A
CA295614A CA295614A CA295614DA CA295614A CA 295614 A CA295614 A CA 295614A CA 295614 A CA295614 A CA 295614A CA 295614D A CA295614D A CA 295614DA CA 295614 A CA295614 A CA 295614A
Authority
CA
Canada
Prior art keywords
exchange system
telephone exchange
telephone
exchange
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
CA295614A
Other languages
French (fr)
Inventor
P. G. Wright Esmond
H. Cameron Alan
H. E. Baker John
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 CA295614A publication Critical patent/CA295614A/en
Expired legal-status Critical Current

Links

CA295614A Telephone exchange system Expired CA295614A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA295614T

Publications (1)

Publication Number Publication Date
CA295614A true CA295614A (en) 1929-12-10

Family

ID=35232932

Family Applications (1)

Application Number Title Priority Date Filing Date
CA295614A Expired CA295614A (en) Telephone exchange system

Country Status (1)

Country Link
CA (1) CA295614A (en)

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