CA809745A - Private branch exchange telephone system - Google Patents

Private branch exchange telephone system

Info

Publication number
CA809745A
CA809745A CA809745A CA809745DA CA809745A CA 809745 A CA809745 A CA 809745A CA 809745 A CA809745 A CA 809745A CA 809745D A CA809745D A CA 809745DA CA 809745 A CA809745 A CA 809745A
Authority
CA
Canada
Prior art keywords
telephone system
private branch
branch exchange
exchange telephone
private
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
CA809745A
Inventor
L. Erwin Edson
J. Walsh Henry
E. Gerbore Alexander
C. Hobbs Gerald
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 CA809745A publication Critical patent/CA809745A/en
Expired legal-status Critical Current

Links

CA809745A Private branch exchange telephone system Expired CA809745A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA809745T

Publications (1)

Publication Number Publication Date
CA809745A true CA809745A (en) 1969-04-01

Family

ID=36280261

Family Applications (1)

Application Number Title Priority Date Filing Date
CA809745A Expired CA809745A (en) Private branch exchange telephone system

Country Status (1)

Country Link
CA (1) CA809745A (en)

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