CA895050A - Communication system for classroom use and the like - Google Patents

Communication system for classroom use and the like

Info

Publication number
CA895050A
CA895050A CA895050A CA895050DA CA895050A CA 895050 A CA895050 A CA 895050A CA 895050 A CA895050 A CA 895050A CA 895050D A CA895050D A CA 895050DA CA 895050 A CA895050 A CA 895050A
Authority
CA
Canada
Prior art keywords
communication system
classroom use
classroom
communication
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
CA895050A
Inventor
E. Abel William
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 CA895050A publication Critical patent/CA895050A/en
Expired legal-status Critical Current

Links

CA895050A Communication system for classroom use and the like Expired CA895050A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA895050T

Publications (1)

Publication Number Publication Date
CA895050A true CA895050A (en) 1972-03-07

Family

ID=36401051

Family Applications (1)

Application Number Title Priority Date Filing Date
CA895050A Expired CA895050A (en) Communication system for classroom use and the like

Country Status (1)

Country Link
CA (1) CA895050A (en)

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