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经营范围
发明名称
Leakage prevention from grounded oil tank- - ers
摘要
Vacuum is maintained in the oil tanks so that the pressure in one oil tank and the column of oil above the water line together correspond to, at most, atmospheric pressure. Apparatus is described.
申请公布号
DE2031905(A1)
申请公布日期
1971.01.07
申请号
DE19702031905
申请日期
1970.06.27
申请人
发明人
分类号
B63B25/12;B63B25/08;B63B43/00;B63B43/18;(IPC1-7):63B25/08
主分类号
B63B25/12
代理机构
代理人
主权项
地址
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