CA87145A - Appareil avertisseur pour echanges telephoniques - Google Patents

Appareil avertisseur pour echanges telephoniques

Info

Publication number: CA87145A
Authority: CA; Canada
Prior art keywords: telephone exchanges; toll apparatus; toll; exchanges; telephone
Prior art date: 1902-07-31
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

CA000087145A

Other languages

English (en)

Inventor

Frank Robert Mcberty

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.)

Bell Telephone Company of Canada

Original Assignee

Bell Telephone Company of Canada

Priority date (The priority date 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 date listed.)

1902-07-31

Filing date

1902-07-31

Publication date

1904-05-10

1902-07-31 Application filed by Bell Telephone Company of Canada filed Critical Bell Telephone Company of Canada

1904-05-10 Application granted granted Critical

1904-05-10 Publication of CA87145A publication Critical patent/CA87145A/fr

Status Expired legal-status Critical Current

Links

CA000087145A 1902-07-31 1902-07-31 Appareil avertisseur pour echanges telephoniques Expired CA87145A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA87145T		1902-07-31

Publications (1)

Publication Number	Publication Date
CA87145A true CA87145A (fr)	1904-05-10

Family

ID=45203680

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA000087145A Expired CA87145A (fr)	1902-07-31	1902-07-31	Appareil avertisseur pour echanges telephoniques

Country Status (1)

Country	Link
CA (1)	CA87145A (fr)

1902
- 1902-07-31 CA CA000087145A patent/CA87145A/fr not_active Expired

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