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经营范围
发明名称
HYDRODYNAMIC DEVICES
摘要
申请公布号
GB2031361(A)
申请公布日期
1980.04.23
申请号
GB19780040863
申请日期
1978.10.14
申请人
PLESSEY CO LTD
发明人
分类号
B63B21/66;B63G8/42;(IPC1-7):B63B35/02
主分类号
B63B21/66
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代理人
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