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发明名称
LANGUAGE PRACTICE DEVICE
摘要
申请公布号
JPH03296085(A)
申请公布日期
1991.12.26
申请号
JP19900100047
申请日期
1990.04.16
申请人
MATSUSHITA ELECTRIC IND CO LTD
发明人
SUGANO SHINICHI;ISHIKAWA TADAYOSHI;ITO KENJI;SAOTOME NORIKO
分类号
G09B5/06;G09B5/08
主分类号
G09B5/06
代理机构
代理人
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