CA500087A - Appareil de sous-centrale telephonique - Google Patents

Appareil de sous-centrale telephonique

Info

Publication number
CA500087A
CA500087A CA500087A CA500087DA CA500087A CA 500087 A CA500087 A CA 500087A CA 500087 A CA500087 A CA 500087A CA 500087D A CA500087D A CA 500087DA CA 500087 A CA500087 A CA 500087A
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
CA500087A
Other languages
English (en)
Inventor
Charles A. Johnson, Jr.
R. Neisser Wilson
M. Hayward 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 CA500087A publication Critical patent/CA500087A/fr
Expired legal-status Critical Current

Links

CA500087A Appareil de sous-centrale telephonique Expired CA500087A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA500087T

Publications (1)

Publication Number Publication Date
CA500087A true CA500087A (fr) 1954-02-16

Family

ID=35645981

Family Applications (1)

Application Number Title Priority Date Filing Date
CA500087A Expired CA500087A (fr) Appareil de sous-centrale telephonique

Country Status (1)

Country Link
CA (1) CA500087A (fr)

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