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发明名称
摘要
申请公布号
DE3613140(C2)
申请公布日期
1988.03.10
申请号
DE19863613140
申请日期
1986.04.18
申请人
WAYSS & FREYTAG AG, 6000 FRANKFURT, DE
发明人
VERZICHT DES ERFINDERS AUF NENNUNG
分类号
E21D9/00;E21D11/05;E21D11/08;F16L9/22;(IPC1-7):E21D11/08;E21D9/06
主分类号
E21D9/00
代理机构
代理人
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