AU427495B2 - Notched card for teaching machine - Google Patents

Notched card for teaching machine

Info

Publication number
AU427495B2
AU427495B2 AU28202/67A AU2820267A AU427495B2 AU 427495 B2 AU427495 B2 AU 427495B2 AU 28202/67 A AU28202/67 A AU 28202/67A AU 2820267 A AU2820267 A AU 2820267A AU 427495 B2 AU427495 B2 AU 427495B2
Authority
AU
Australia
Prior art keywords
teaching machine
notched card
notched
card
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
AU28202/67A
Other versions
AU2820267A (en
Inventor
Michael Davidson Richard
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.)
Bell and Howell Co
Original Assignee
Bell and Howell Co
Filing date
Publication date
Application filed by Bell and Howell Co filed Critical Bell and Howell Co
Application granted granted Critical
Publication of AU2820267A publication Critical patent/AU2820267A/en
Publication of AU427495B2 publication Critical patent/AU427495B2/en
Expired legal-status Critical Current

Links

AU28202/67A 1967-10-09 Notched card for teaching machine Expired AU427495B2 (en)

Publications (2)

Publication Number Publication Date
AU2820267A AU2820267A (en) 1969-04-17
AU427495B2 true AU427495B2 (en) 1969-04-17

Family

ID=

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