CA623439A - Didactic apparatus - Google Patents

Didactic apparatus

Info

Publication number
CA623439A
CA623439A CA623439A CA623439DA CA623439A CA 623439 A CA623439 A CA 623439A CA 623439 A CA623439 A CA 623439A CA 623439D A CA623439D A CA 623439DA CA 623439 A CA623439 A CA 623439A
Authority
CA
Canada
Prior art keywords
didactic
didactic apparatus
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
CA623439A
Inventor
Ritter Eduard
Von Esch Paul
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 CA623439A publication Critical patent/CA623439A/en
Expired legal-status Critical Current

Links

CA623439A Didactic apparatus Expired CA623439A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA623439T

Publications (1)

Publication Number Publication Date
CA623439A true CA623439A (en) 1961-07-11

Family

ID=35878618

Family Applications (1)

Application Number Title Priority Date Filing Date
CA623439A Expired CA623439A (en) Didactic apparatus

Country Status (1)

Country Link
CA (1) CA623439A (en)

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