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发明名称
DEVICE FOR LIFTING MANGANESE CONCRETIONS OR LIKE OBJECTS FROM SEA BOTTOM
摘要
申请公布号
SU1602397(A3)
申请公布日期
1990.10.23
申请号
SU19853933052
申请日期
1985.08.02
申请人
PREUSSAG AG
发明人
KHANS AMANN;AKSEL BAT
分类号
E02F5/00;E21C45/00;E21C50/00;E21C50/02
主分类号
E02F5/00
代理机构
代理人
主权项
地址
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