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发明名称
摘要
申请公布号	FR2264942(B1)	申请公布日期	1977.06.17
申请号	FR19740009615	申请日期	1974.03.21
申请人	DESBORDES JEAN LOUIS	发明人
分类号	E01D2/00;E01D2/04;E04B5/23;E04B5/38;E04C3/20;E04C5/00;(IPC1-7):E04G21/12;B28B23/02;E04C5/16	主分类号	E01D2/00
代理机构		代理人
主权项
地址

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