CA325839A - Telephone exchange system - Google Patents

Telephone exchange system

Info

Publication number: CA325839A
Authority: CA; Canada
Prior art keywords: exchange system; telephone exchange; telephone; exchange
Prior art date: 1932-09-06
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

CA325839A

Other languages

French (fr)

Inventor

Philip Goodwin Wright Edmond

Clifford Hartley George

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

1932-09-06

1932-09-06 Application granted granted Critical

1932-09-06 Publication of CA325839A publication Critical patent/CA325839A/en

Status Expired legal-status Critical Current

Links

CA325839A Telephone exchange system Expired CA325839A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA325839T

Publications (1)

Publication Number	Publication Date
CA325839A true CA325839A (en)	1932-09-06

Family

ID=35288209

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA325839A Expired CA325839A (en)			Telephone exchange system

Country Status (1)

Country	Link
CA (1)	CA325839A (en)

0
- CA CA325839A patent/CA325839A/en not_active Expired

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