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发明名称
Aeroplane propeller
摘要
申请公布号
US1913590(A)
申请公布日期
1933.06.13
申请号
US19310517972
申请日期
1931.02.24
申请人
STEVEN FTACEK
发明人
FTACEK STEVEN
分类号
B64C11/48
主分类号
B64C11/48
代理机构
代理人
主权项
地址
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