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发明名称
FOREIGN CONVERSATION LEARNING SYSTEM
摘要
申请公布号
JPS6330883(A)
申请公布日期
1988.02.09
申请号
JP19860173753
申请日期
1986.07.25
申请人
KOKUSAI ONSEI SERVICE KK
发明人
KAWAKAMI TORU
分类号
G09B5/04
主分类号
G09B5/04
代理机构
代理人
主权项
地址
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