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经营范围
发明名称
Improvements in and relating to rudders
摘要
申请公布号
GB457755(A)
申请公布日期
1936.12.07
申请号
GB19350006057
申请日期
1935.06.05
申请人
DAVID RAMSAY SMITH
发明人
分类号
B63H1/36
主分类号
B63H1/36
代理机构
代理人
主权项
地址
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