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发明名称
Improvements in or relating to screw-propellers
摘要
申请公布号
GB562865(A)
申请公布日期
1944.07.19
申请号
GB19420017616
申请日期
1942.12.10
申请人
BERNARD VICTOR HOLBERTON
发明人
分类号
B63H3/08
主分类号
B63H3/08
代理机构
代理人
主权项
地址
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