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发明名称
摘要
申请公布号
FR2400092(B1)
申请公布日期
1982.12.03
申请号
FR19770024878
申请日期
1977.08.12
申请人
BLISS ET LAUGHLIN INDUSTRIES INC
发明人
分类号
E04F21/02;E04F21/06;E04F21/16;(IPC1-7):04F21/02
主分类号
E04F21/02
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