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发明名称
CHESS CLOCK
摘要
申请公布号
RU1833504(C)
申请公布日期
1993.08.07
申请号
SU19914907864
申请日期
1991.02.01
申请人
DAVYDOV MIKHAIL G;FROLKIN BORIS F
发明人
DAVYDOV MIKHAIL G;FROLKIN BORIS F
分类号
G07C1/28
主分类号
G07C1/28
代理机构
代理人
主权项
地址
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