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发明名称
摘要
申请公布号
NL293461(A)
申请公布日期
1965.07.26
申请号
NL19630293461
申请日期
1963.05.30
申请人
发明人
分类号
G04C13/02;G04G9/00;G04R20/22;G04R20/24;G04R40/02
主分类号
G04C13/02
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代理人
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