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经营范围
发明名称
Improvements in screw propellers
摘要
申请公布号
GB506367(A)
申请公布日期
1939.05.26
申请号
GB19380024016
申请日期
1938.08.15
申请人
MILDRED MARTIN REID
发明人
分类号
B64C11/30
主分类号
B64C11/30
代理机构
代理人
主权项
地址
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