CA407988A - Dispositif d'enseignement - Google Patents

Dispositif d'enseignement

Info

Publication number
CA407988A
CA407988A CA407988A CA407988DA CA407988A CA 407988 A CA407988 A CA 407988A CA 407988 A CA407988 A CA 407988A CA 407988D A CA407988D A CA 407988DA CA 407988 A CA407988 A CA 407988A
Authority
CA
Canada
Prior art keywords
educational device
educational
Prior art date
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
CA407988A
Other languages
English (en)
Inventor
B. Johnson Reynold
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Publication date
Application granted granted Critical
Publication of CA407988A publication Critical patent/CA407988A/fr
Expired legal-status Critical Current

Links

CA407988A Dispositif d'enseignement Expired CA407988A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA407988T

Publications (1)

Publication Number Publication Date
CA407988A true CA407988A (fr) 1942-10-13

Family

ID=35419288

Family Applications (1)

Application Number Title Priority Date Filing Date
CA407988A Expired CA407988A (fr) Dispositif d'enseignement

Country Status (1)

Country Link
CA (1) CA407988A (fr)

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