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DyKnow

42 bytes added, 17:48, 25 November 2009

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* [http://www.google.com/patents/about?id=idh_AAAAEBAJ US 7213211]

*[http://www.google.com/patents/about?id=0AC6AAAAEBAJ US 7508354]

[[Category:Proprietary course software]]

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