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摘要
申请公布号
FR1570179(A)
申请公布日期
1969.06.06
申请号
FRD1570179
申请日期
1968.06.13
申请人
发明人
分类号
B04C5/00;B04C5/04
主分类号
B04C5/00
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代理人
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