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发明名称
Apparatus for reducing frictional resistance of liquid on floating bodies
摘要
申请公布号
US2218938(A)
申请公布日期
1940.10.22
申请号
US19390250884
申请日期
1939.01.14
申请人
JOHN RINNE
发明人
RINNE JOHN
分类号
B63B1/38
主分类号
B63B1/38
代理机构
代理人
主权项
地址
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