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发明名称
Improvements in screw propellers
摘要
申请公布号
GB392895(A)
申请公布日期
1933.05.25
申请号
GB19310023359
申请日期
1931.08.19
申请人
FRANCIS EDWARD COLBERT
发明人
分类号
B64C11/24
主分类号
B64C11/24
代理机构
代理人
主权项
地址
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