CA178264A - Telephone exchange system - Google Patents

Telephone exchange system

Info

Publication number: CA178264A
Authority: CA; Canada
Prior art keywords: exchange system; telephone exchange; telephone; exchange
Prior art date: 1915-09-27
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

CA000178264A

Other languages

French (fr)

Inventor

Edward B. Craft

John N. Reynolds

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.)

AT&T Corp

Original Assignee

Western Electric Co Inc

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.)

1915-09-27

Filing date

1915-09-27

Publication date

1917-07-17

1915-09-27 Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc

1917-07-17 Application granted granted Critical

1917-07-17 Publication of CA178264A publication Critical patent/CA178264A/en

Status Expired legal-status Critical Current

Links

CA000178264A 1915-09-27 1915-09-27 Telephone exchange system Expired CA178264A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA178264T		1915-09-27

Publications (1)

Publication Number	Publication Date
CA178264A true CA178264A (en)	1917-07-17

Family

ID=45297917

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA000178264A Expired CA178264A (en)	1915-09-27	1915-09-27	Telephone exchange system

Country Status (1)

Country	Link
CA (1)	CA178264A (en)

1915
- 1915-09-27 CA CA000178264A patent/CA178264A/en not_active Expired

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