CA423187A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA423187A
CA423187A CA423187A CA423187DA CA423187A CA 423187 A CA423187 A CA 423187A CA 423187 A CA423187 A CA 423187A CA 423187D A CA423187D A CA 423187DA CA 423187 A CA423187 A CA 423187A
Authority
CA
Canada
Prior art keywords
telephone system
telephone
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
CA423187A
Other languages
English (en)
Inventor
Carl Mathes Robert
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 CA423187A publication Critical patent/CA423187A/fr
Expired legal-status Critical Current

Links

CA423187A Systeme telephonique Expired CA423187A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA423187T

Publications (1)

Publication Number Publication Date
CA423187A true CA423187A (fr) 1944-10-10

Family

ID=35534189

Family Applications (1)

Application Number Title Priority Date Filing Date
CA423187A Expired CA423187A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA423187A (fr)

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