CA403996A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA403996A
CA403996A CA403996A CA403996DA CA403996A CA 403996 A CA403996 A CA 403996A CA 403996 A CA403996 A CA 403996A CA 403996D A CA403996D A CA 403996DA CA 403996 A CA403996 A CA 403996A
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
CA403996A
Other languages
English (en)
Inventor
Richard Lamberty Frederick
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 CA403996A publication Critical patent/CA403996A/fr
Expired legal-status Critical Current

Links

CA403996A Systeme telephonique Expired CA403996A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA403996T

Publications (1)

Publication Number Publication Date
CA403996A true CA403996A (fr) 1942-04-07

Family

ID=35414444

Family Applications (1)

Application Number Title Priority Date Filing Date
CA403996A Expired CA403996A (fr) Systeme telephonique

Country Status (1)

Country Link
CA (1) CA403996A (fr)

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