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发明名称
PRESENTATION SYSTEM
摘要
申请公布号
JPH03257676(A)
申请公布日期
1991.11.18
申请号
JP19900057423
申请日期
1990.03.08
申请人
HITACHI LTD
发明人
ISHIDA HIDEAKI;YAMADA TAKEHIRO
分类号
G09B29/10;G06T1/00;G09G5/00
主分类号
G09B29/10
代理机构
代理人
主权项
地址
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