CA459993A - Telephone system - Google Patents

Telephone system

Info

Publication number: CA459993A
Authority: CA; Canada
Prior art keywords: telephone system; telephone
Prior art date: 1949-09-27
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

Other languages

French (fr)

Inventor

Westall Durkin Eric

Leonard Peters Charles

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.)

Siemens Brothers and Co Ltd

Original Assignee

Siemens Brothers and Co Ltd

Publication date

1949-09-27

1949-09-27 Application granted granted Critical

1949-09-27 Publication of CA459993A publication Critical patent/CA459993A/en

Status Expired legal-status Critical Current

Links

CA459993D Telephone system Expired CA459993A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA459993T

Publications (1)

Publication Number	Publication Date
CA459993A true CA459993A (en)	1949-09-27

Family

ID=35578905

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA459993D Expired CA459993A (en)			Telephone system

Country Status (1)

Country	Link
CA (1)	CA459993A (en)

0
- CA CA459993D patent/CA459993A/en not_active Expired

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