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发明名称
摘要
申请公布号
FR2003668(A1)
申请公布日期
1969.11.14
申请号
FR19690006793
申请日期
1969.03.10
申请人
WARREN CHILDERS
发明人
分类号
G03B27/80;(IPC1-7):G03B27/00
主分类号
G03B27/80
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代理人
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