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Inventor:
Raasch; Christopher W.
Address:
Marshall, WI
No. of patents:
1
Patents:












Patent Number Title Of Patent Date Issued
8244697 Versioning system for electronic textbooks August 14, 2012
A versioning system for electronic textbooks provided to a variety of textbook readers uses a highly abstracted content file tagged with content identifiers allowing this content file to be readily re-edited into multiple versions compatible with different curricula and suitable for










 
 
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