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摘要
申请公布号
BE647295(A)
申请公布日期
1964.08.17
申请号
BED647295
申请日期
1964.04.29
申请人
发明人
分类号
E04C2/32;E04C2/38;E04D3/24;E04D3/36;E04D3/363;E04D13/00;E04F13/08
主分类号
E04C2/32
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