CA320903A - Systeme de central telephonique - Google Patents

Systeme de central telephonique

Info

Publication number: CA320903A
Authority: CA; Canada
Prior art keywords: exchange system; telephone exchange; telephone; exchange
Prior art date: 1932-03-22
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

CA320903A

Other languages

English (en)

Inventor

Guernsey Dunham Bert

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

1932-03-22

1932-03-22 Application granted granted Critical

1932-03-22 Publication of CA320903A publication Critical patent/CA320903A/fr

Status Expired legal-status Critical Current

Links

CA320903A Systeme de central telephonique Expired CA320903A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA320903T

Publications (1)

Publication Number	Publication Date
CA320903A true CA320903A (fr)	1932-03-22

Family

ID=35281457

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA320903A Expired CA320903A (fr)			Systeme de central telephonique

Country Status (1)

Country	Link
CA (1)	CA320903A (fr)

0
- CA CA320903A patent/CA320903A/fr not_active Expired

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