CA889392A - Teaching device - Google Patents

Teaching device

Info

Publication number
CA889392A
CA889392A CA889392A CA889392DA CA889392A CA 889392 A CA889392 A CA 889392A CA 889392 A CA889392 A CA 889392A CA 889392D A CA889392D A CA 889392DA CA 889392 A CA889392 A CA 889392A
Authority
CA
Canada
Prior art keywords
teaching device
teaching
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
CA889392A
Inventor
W. Ryan John
B. Sloop Conrad
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.)
Mattel Inc
Original Assignee
Mattel Inc
Publication date
Application granted granted Critical
Publication of CA889392A publication Critical patent/CA889392A/en
Expired legal-status Critical Current

Links

CA889392A Teaching device Expired CA889392A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA889392T

Publications (1)

Publication Number Publication Date
CA889392A true CA889392A (en) 1971-12-28

Family

ID=36395577

Family Applications (1)

Application Number Title Priority Date Filing Date
CA889392A Expired CA889392A (en) Teaching device

Country Status (1)

Country Link
CA (1) CA889392A (en)

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