CA219451A - Systeme telephonometrique - Google Patents

Systeme telephonometrique

Info

Publication number: CA219451A
Authority: CA; Canada
Prior art keywords: telephone system; measured service; service telephone; measured; telephone
Prior art date: 1922-06-06
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

CA219451A

Other languages

English (en)

Inventor

G. Martin Talbot

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

Automatic Electric Co

Original Assignee

Northern Electric Co Ltd

Automatic Electric Co

Publication date

1922-06-06

1922-06-06 Application granted granted Critical

1922-06-06 Publication of CA219451A publication Critical patent/CA219451A/fr

Status Expired legal-status Critical Current

Links

CA219451A Systeme telephonometrique Expired CA219451A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA219451T

Publications (1)

Publication Number	Publication Date
CA219451A true CA219451A (fr)	1922-06-06

Family

ID=35113895

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA219451A Expired CA219451A (fr)			Systeme telephonometrique

Country Status (1)

Country	Link
CA (1)	CA219451A (fr)

0
- CA CA219451A patent/CA219451A/fr not_active Expired

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