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发明名称
摘要
申请公布号
GB1258608(A)
申请公布日期
1971.12.30
申请号
GBD1258608
申请日期
1969.10.16
申请人
发明人
分类号
B64C27/00;G01L9/00
主分类号
B64C27/00
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代理人
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