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发明名称
摘要
申请公布号
FR2214029(B3)
申请公布日期
1978.03.10
申请号
FR19740001549
申请日期
1974.01.17
申请人
WETZEL ALFRED
发明人
分类号
E04F13/08;(IPC1-7):E04F13/00;E04C2/30
主分类号
E04F13/08
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