CA403122A - Appareil d'enseignement - Google Patents

Appareil d'enseignement

Info

Publication number: CA403122A
Authority: CA; Canada
Prior art keywords: educational apparatus; educational
Prior art date: 1942-02-24
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

CA403122A

Other languages

English (en)

Inventor

Martin Glunt Omer

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

Bell Telephone Laboratories Inc

Publication date

1942-02-24

1942-02-24 Application granted granted Critical

1942-02-24 Publication of CA403122A publication Critical patent/CA403122A/fr

Status Expired legal-status Critical Current

Links

CA403122A Appareil d'enseignement Expired CA403122A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA403122T

Publications (1)

Publication Number	Publication Date
CA403122A true CA403122A (fr)	1942-02-24

Family

ID=35413569

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA403122A Expired CA403122A (fr)			Appareil d'enseignement

Country Status (1)

Country	Link
CA (1)	CA403122A (fr)

0
- CA CA403122A patent/CA403122A/fr not_active Expired

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