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发明名称
摘要
申请公布号
DE3942397(C2)
申请公布日期
1993.04.15
申请号
DE19893942397
申请日期
1989.12.21
申请人
SEIKOSHA CO., LTD., TOKIO/TOKYO, JP
发明人
WATANABE, ISATO, TOKIO/TOKYO, JP
分类号
G04B19/04;G04B19/30;G04C3/00;G04C3/14
主分类号
G04B19/04
代理机构
代理人
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