CA498169A - Systeme de signalisation de telephone - Google Patents

Systeme de signalisation de telephone

Info

Publication number: CA498169A
Authority: CA; Canada
Prior art keywords: signalling system; telephone signalling; telephone; signalling
Prior art date: 1953-12-01
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

CA498169A

Other languages

English (en)

Inventor

Walter D. Goodale, Jr.

H. Martin William

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

1953-12-01

1953-12-01 Application granted granted Critical

1953-12-01 Publication of CA498169A publication Critical patent/CA498169A/fr

Status Expired legal-status Critical Current

Links

230000011664 signaling Effects 0.000 title 1

CA498169A Systeme de signalisation de telephone Expired CA498169A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA498169T

Publications (1)

Publication Number	Publication Date
CA498169A true CA498169A (fr)	1953-12-01

Family

ID=35643604

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA498169A Expired CA498169A (fr)			Systeme de signalisation de telephone

Country Status (1)

Country	Link
CA (1)	CA498169A (fr)

0
- CA CA498169A patent/CA498169A/fr not_active Expired

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