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发明名称
Improvements in or relating to screw propellers
摘要
申请公布号
GB372524(A)
申请公布日期
1932.05.12
申请号
GB19310011281
申请日期
1931.04.16
申请人
JOHN SQUIRES
发明人
分类号
B64C11/06
主分类号
B64C11/06
代理机构
代理人
主权项
地址
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