CA474121A - Dispositifs d'enseignement - Google Patents

Dispositifs d'enseignement

Info

Publication number
CA474121A
CA474121A CA474121A CA474121DA CA474121A CA 474121 A CA474121 A CA 474121A CA 474121 A CA474121 A CA 474121A CA 474121D A CA474121D A CA 474121DA CA 474121 A CA474121 A CA 474121A
Authority
CA
Canada
Prior art keywords
teaching devices
teaching
devices
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
CA474121A
Other languages
English (en)
Inventor
Jean Hawkins Barbara
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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA474121A publication Critical patent/CA474121A/fr
Expired legal-status Critical Current

Links

CA474121A Dispositifs d'enseignement Expired CA474121A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA474121T

Publications (1)

Publication Number Publication Date
CA474121A true CA474121A (fr) 1951-06-05

Family

ID=35608097

Family Applications (1)

Application Number Title Priority Date Filing Date
CA474121A Expired CA474121A (fr) Dispositifs d'enseignement

Country Status (1)

Country Link
CA (1) CA474121A (fr)

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