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经营范围
发明名称
Rueckstausicherung fuer Kanalisationen
摘要
申请公布号
DE1658183(A1)
申请公布日期
1970.09.10
申请号
DE19671658183
申请日期
1967.03.02
申请人
DRECKMANN BAUGESELLSCHAFT MBH
发明人
DRECKMANN,EWALD
分类号
E03F7/04
主分类号
E03F7/04
代理机构
代理人
主权项
地址
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