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发明名称
SOROBAN FINGER TRAINER
摘要
申请公布号
JPH05313564(A)
申请公布日期
1993.11.26
申请号
JP19920155531
申请日期
1992.05.01
申请人
SATO ATSUHIKO
发明人
SATO ATSUHIKO
分类号
G06C1/00;G09B19/02;(IPC1-7):G09B19/02
主分类号
G06C1/00
代理机构
代理人
主权项
地址
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