CA512081A - Automatic telephone exchange systems - Google Patents

Automatic telephone exchange systems

Info

Publication number: CA512081A
Authority: CA; Canada
Prior art keywords: telephone exchange; automatic telephone; exchange systems; systems; automatic
Prior art date: 1955-04-19
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

CA512081A

Other languages

French (fr)

Inventor

W. Graybill Kenneth

Sengebusch Hans

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.)

Nortel Networks Ltd

Original Assignee

Northern Electric Co Ltd

Publication date

1955-04-19

1955-04-19 Application granted granted Critical

1955-04-19 Publication of CA512081A publication Critical patent/CA512081A/en

Status Expired legal-status Critical Current

Links

CA512081A Automatic telephone exchange systems Expired CA512081A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA512081T

Publications (1)

Publication Number	Publication Date
CA512081A true CA512081A (en)	1955-04-19

Family

ID=35663153

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA512081A Expired CA512081A (en)			Automatic telephone exchange systems

Country Status (1)

Country	Link
CA (1)	CA512081A (en)

0
- CA CA512081A patent/CA512081A/en not_active Expired

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