CA223729A - Primary instruction board - Google Patents

Primary instruction board

Info

Publication number
CA223729A
CA223729A CA223729A CA223729DA CA223729A CA 223729 A CA223729 A CA 223729A CA 223729 A CA223729 A CA 223729A CA 223729D A CA223729D A CA 223729DA CA 223729 A CA223729 A CA 223729A
Authority
CA
Canada
Prior art keywords
primary instruction
instruction board
board
primary
instruction
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
CA223729A
Other languages
French (fr)
Inventor
Ferdinand Heins Christian
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 CA223729A publication Critical patent/CA223729A/en
Expired legal-status Critical Current

Links

CA223729A Primary instruction board Expired CA223729A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA223729T

Publications (1)

Publication Number Publication Date
CA223729A true CA223729A (en) 1922-09-19

Family

ID=35119332

Family Applications (1)

Application Number Title Priority Date Filing Date
CA223729A Expired CA223729A (en) Primary instruction board

Country Status (1)

Country Link
CA (1) CA223729A (en)

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