Assignee

LEARNING INSIGHTS LTD

US·1 granted patent·177 citations·filing 1988–1988

Technology mixG09B1 Y10S1

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0191US4985697AElectronic book educational publishing method using buried reference materials and alternate learning levelsLEARNING INSIGHTS LTD·Filed 1988·Granted Jan 15, 1991·177 cites·12 claims

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