H - Electricity – 04 – M
Patent
H - Electricity
04
M
379/3, 35/55
H04M 11/00 (2006.01)
Patent
CA 1234937
ABSTRACT OF THE DISCLOSURE This invention relates to an automated educational system in which a remote student or subject can be interro- gated by a central automated interrogation system, can respond using machine-distinguishable signals generated by a Touch-Tone- type telephone, and in which an appropriate reaction to the answer chosen by the student can be communicated to the student.
489568
Eckmann Stuart F.
Riches Mckenzie & Herbert Llp
LandOfFree
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