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发明名称
Method and apparatus for tracking version of digital content
摘要
A system and method for live data versioning is provided.
申请公布号
US2008305777(A1)
申请公布日期
2008.12.11
申请号
US20070810828
申请日期
2007.06.06
申请人
MSPOT, INC.
发明人
WAI KING SUN
分类号
H04M3/42
主分类号
H04M3/42
代理机构
代理人
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地址
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