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经营范围
发明名称
Improvements in screw propulsion
摘要
申请公布号
GB332124(A)
申请公布日期
1930.07.17
申请号
GB19290027686
申请日期
1929.09.11
申请人
PERCIVAL EDWIN MCNEIL
发明人
分类号
B63H1/28
主分类号
B63H1/28
代理机构
代理人
主权项
地址
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