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Language learning opportunities and general search engines
Patent number
9,070,303
Issue date
Jun 30, 2015
Microsoft Technology Licensing, LLC
Hongchao Guan
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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LANGUAGE LEARNING OPPORTUNITIES AND GENERAL SEARCH ENGINES
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20130325833
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Dec 5, 2013
Microsoft Corporation
HONGCHAO GUAN
G06 - COMPUTING CALCULATING COUNTING