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发明名称
Improvements in or relating to screw propellers
摘要
申请公布号
GB507408(A)
申请公布日期
1939.06.12
申请号
GB19370024818
申请日期
1937.09.11
申请人
KENNETH GATISS FRASER
发明人
分类号
B64C11/16
主分类号
B64C11/16
代理机构
代理人
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