CA496189A - Systeme telephonique agence pour la signalisation de frequence de la voix - Google Patents

Systeme telephonique agence pour la signalisation de frequence de la voix

Info

Publication number: CA496189A
Authority: CA; Canada
Prior art keywords: telephone system; system arranged; voice frequency; frequency signaling; signaling
Prior art date: 1953-09-15
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

CA496189A

Other languages

English (en)

Inventor

Mckim Burton

Josiah L. Merrill, Jr.

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

1953-09-15

1953-09-15 Application granted granted Critical

1953-09-15 Publication of CA496189A publication Critical patent/CA496189A/fr

Status Expired legal-status Critical Current

Links

230000011664 signaling Effects 0.000 title 1

CA496189A Systeme telephonique agence pour la signalisation de frequence de la voix Expired CA496189A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA496189T

Publications (1)

Publication Number	Publication Date
CA496189A true CA496189A (fr)	1953-09-15

Family

ID=35641609

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA496189A Expired CA496189A (fr)			Systeme telephonique agence pour la signalisation de frequence de la voix

Country Status (1)

Country	Link
CA (1)	CA496189A (fr)

0
- CA CA496189A patent/CA496189A/fr not_active Expired

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