CA776372A - Educational device - Google Patents

Educational device

Info

Publication number
CA776372A
CA776372A CA776372A CA776372DA CA776372A CA 776372 A CA776372 A CA 776372A CA 776372 A CA776372 A CA 776372A CA 776372D A CA776372D A CA 776372DA CA 776372 A CA776372 A CA 776372A
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
CA776372A
Inventor
P. Burke Jack
C. Skonberg Ted
J. Stinn Dorothea
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 CA776372A publication Critical patent/CA776372A/en
Expired legal-status Critical Current

Links

CA776372A Educational device Expired CA776372A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA776372T

Publications (1)

Publication Number Publication Date
CA776372A true CA776372A (en) 1968-01-23

Family

ID=36223667

Family Applications (1)

Application Number Title Priority Date Filing Date
CA776372A Expired CA776372A (en) Educational device

Country Status (1)

Country Link
CA (1) CA776372A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3755938A (en) * 1971-06-14 1973-09-04 A Bytwork Graphmatic magnegraph
US4255837A (en) * 1978-07-27 1981-03-17 Magnetoplan H. Jo. Holtz Magnetic clip device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3755938A (en) * 1971-06-14 1973-09-04 A Bytwork Graphmatic magnegraph
US4255837A (en) * 1978-07-27 1981-03-17 Magnetoplan H. Jo. Holtz Magnetic clip device

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