CA497261A - Appareil de sous-centrale telephonique - Google Patents

Appareil de sous-centrale telephonique

Info

Publication number
CA497261A
CA497261A CA497261A CA497261DA CA497261A CA 497261 A CA497261 A CA 497261A CA 497261 A CA497261 A CA 497261A CA 497261D A CA497261D A CA 497261DA CA 497261 A CA497261 A CA 497261A
Authority
CA
Canada
Prior art keywords
substation apparatus
telephone substation
telephone
substation
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
CA497261A
Other languages
English (en)
Inventor
J. Thayer Walter
T. Curran Stanley
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 CA497261A publication Critical patent/CA497261A/fr
Expired legal-status Critical Current

Links

CA497261A Appareil de sous-centrale telephonique Expired CA497261A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA497261T

Publications (1)

Publication Number Publication Date
CA497261A true CA497261A (fr) 1953-10-27

Family

ID=35642690

Family Applications (1)

Application Number Title Priority Date Filing Date
CA497261A Expired CA497261A (fr) Appareil de sous-centrale telephonique

Country Status (1)

Country Link
CA (1) CA497261A (fr)

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