CA13007A - Perfectionnements aux appareils telephoniques a signaux - Google Patents

Perfectionnements aux appareils telephoniques a signaux

Info

Publication number: CA13007A
Authority: CA; Canada
Prior art keywords: telephone signal; signal apparatus; telephone; signal
Prior art date: 1881-06-16
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

CA000013007A

Other languages

English (en)

Inventor

Thomas A. Watson

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.)

CANADIAN TELEPHONE Co

Original Assignee

CANADIAN TELEPHONE Co

Publication date

1881-06-16

1881-06-16 Application granted granted Critical

1881-06-16 Publication of CA13007A publication Critical patent/CA13007A/fr

Status Expired legal-status Critical Current

Links

CA000013007A Perfectionnements aux appareils telephoniques a signaux Expired CA13007A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA13007T

Publications (1)

Publication Number	Publication Date
CA13007A true CA13007A (fr)	1881-06-16

Family

ID=45129552

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA000013007A Expired CA13007A (fr)			Perfectionnements aux appareils telephoniques a signaux

Country Status (1)

Country	Link
CA (1)	CA13007A (fr)

0
- CA CA000013007A patent/CA13007A/fr not_active Expired

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