CA426767A - Telephone system controlling apparatus - Google Patents

Telephone system controlling apparatus

Info

Publication number
CA426767A
CA426767A CA426767A CA426767DA CA426767A CA 426767 A CA426767 A CA 426767A CA 426767 A CA426767 A CA 426767A CA 426767D A CA426767D A CA 426767DA CA 426767 A CA426767 A CA 426767A
Authority
CA
Canada
Prior art keywords
telephone system
controlling apparatus
system controlling
telephone
controlling
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
CA426767A
Other languages
French (fr)
Inventor
Leone Dimond Thomas
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 CA426767A publication Critical patent/CA426767A/en
Expired legal-status Critical Current

Links

CA426767A Telephone system controlling apparatus Expired CA426767A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA426767T

Publications (1)

Publication Number Publication Date
CA426767A true CA426767A (en) 1945-04-10

Family

ID=35537795

Family Applications (1)

Application Number Title Priority Date Filing Date
CA426767A Expired CA426767A (en) Telephone system controlling apparatus

Country Status (1)

Country Link
CA (1) CA426767A (en)

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