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发明名称
IMAGE-BASED HUMAN INTERACTIVE PROOFS
摘要
申请公布号
EP2359229(A2)
申请公布日期
2011.08.24
申请号
EP20090837782
申请日期
2009.11.20
申请人
MICROSOFT CORPORATION
发明人
CHICKERING, DAVID M.;IVERSON, KRISTOFER N.
分类号
G06F21/20
主分类号
G06F21/20
代理机构
代理人
主权项
地址
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