CA165221A - Systeme d'echange telephonique - Google Patents

Systeme d'echange telephonique

Info

Publication number: CA165221A
Authority: CA; Canada
Prior art keywords: exchange system; telephone exchange; telephone; exchange
Prior art date: 1913-06-18
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

Inventor

Elmer R. Corwin

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.)

FRANK B COOK Co

Original Assignee

FRANK B COOK Co

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.)

1913-06-18

Filing date

1913-06-18

Publication date

1915-10-05

1913-06-18 Application filed by FRANK B COOK Co filed Critical FRANK B COOK Co

1915-10-05 Application granted granted Critical

1915-10-05 Publication of CA165221A publication Critical patent/CA165221A/fr

Status Expired legal-status Critical Current

Links

CA165221D 1913-06-18 1913-06-18 Systeme d'echange telephonique Expired CA165221A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA165221T		1913-06-18

Publications (1)

Publication Number	Publication Date
CA165221A true CA165221A (fr)	1915-10-05

Family

ID=45284901

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA165221D Expired CA165221A (fr)	1913-06-18	1913-06-18	Systeme d'echange telephonique

Country Status (1)

Country	Link
CA (1)	CA165221A (fr)

1913
- 1913-06-18 CA CA165221D patent/CA165221A/fr not_active Expired

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