CA320902A - Systeme indicateur et enregistreur de telephones - Google Patents

Systeme indicateur et enregistreur de telephones

Info

Publication number: CA320902A
Authority: CA; Canada
Prior art keywords: recording system; telephone indicating; telephone; indicating; recording
Prior art date: 1932-03-22
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

CA320902A

Other languages

English (en)

Inventor

Frederick Dahl Jack

Churchill Davis Richard

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

Publication date

1932-03-22

1932-03-22 Application granted granted Critical

1932-03-22 Publication of CA320902A publication Critical patent/CA320902A/fr

Status Expired legal-status Critical Current

Links

CA320902A Systeme indicateur et enregistreur de telephones Expired CA320902A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA320902T

Publications (1)

Publication Number	Publication Date
CA320902A true CA320902A (fr)	1932-03-22

Family

ID=35281456

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA320902A Expired CA320902A (fr)			Systeme indicateur et enregistreur de telephones

Country Status (1)

Country	Link
CA (1)	CA320902A (fr)

0
- CA CA320902A patent/CA320902A/fr not_active Expired

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