CA459347A - Telephone call-indicating facility - Google Patents

Telephone call-indicating facility

Info

Publication number: CA459347A
Authority: CA; Canada
Prior art keywords: telephone call; indicating facility; facility; indicating; telephone
Prior art date: 1949-08-30
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

CA459347A

Other languages

French (fr)

Inventor

M. Boardman Edward

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

1949-08-30

1949-08-30 Application granted granted Critical

1949-08-30 Publication of CA459347A publication Critical patent/CA459347A/en

Status Expired legal-status Critical Current

Links

CA459347A Telephone call-indicating facility Expired CA459347A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA459347T

Publications (1)

Publication Number	Publication Date
CA459347A true CA459347A (en)	1949-08-30

Family

ID=35578176

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA459347A Expired CA459347A (en)			Telephone call-indicating facility

Country Status (1)

Country	Link
CA (1)	CA459347A (en)

0
- CA CA459347A patent/CA459347A/en not_active Expired

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