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经营范围
发明名称
Aerodynamic rotor
摘要
申请公布号
US2173291(A)
申请公布日期
1939.09.19
申请号
US19380234196
申请日期
1938.10.10
申请人
LEO ASH THOMAS
发明人
ASH THOMAS LEO
分类号
B64C27/02
主分类号
B64C27/02
代理机构
代理人
主权项
地址
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