CA454334A - Telephone system - Google Patents

Telephone system

Info

Publication number: CA454334A
Authority: CA; Canada
Prior art keywords: telephone system; telephone
Prior art date: 1949-01-25
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

CA454334A

Other languages

French (fr)

Inventor

John Davidson, 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

Bell Telephone Laboratories Inc

Publication date

1949-01-25

1949-01-25 Application granted granted Critical

1949-01-25 Publication of CA454334A publication Critical patent/CA454334A/en

Status Expired legal-status Critical Current

Links

CA454334A Telephone system Expired CA454334A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA454334T

Publications (1)

Publication Number	Publication Date
CA454334A true CA454334A (en)	1949-01-25

Family

ID=35572069

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA454334A Expired CA454334A (en)			Telephone system

Country Status (1)

Country	Link
CA (1)	CA454334A (en)

0
- CA CA454334A patent/CA454334A/en not_active Expired

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