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发明名称
CONVERSATION MANNER EDUCATION SYSTEM
摘要
申请公布号
JPH0344690(A)
申请公布日期
1991.02.26
申请号
JP19890179072
申请日期
1989.07.13
申请人
N T T DATA TSUSHIN KK
发明人
SHIROTSUKA OTOYA;MURAKAMI NORIYA
分类号
G09B19/00;G09B5/00
主分类号
G09B19/00
代理机构
代理人
主权项
地址
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