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发明名称
摘要
申请公布号
FR2114990(A1)
申请公布日期
1972.07.07
申请号
FR19700041528
申请日期
1970.11.19
申请人
SEF ETUDES DE FORMES
发明人
分类号
E04B1/348;E04H1/02;(IPC1-7):E04B1/00;E06B3/00
主分类号
E04B1/348
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