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经营范围
发明名称
Autocopter aircraft
摘要
申请公布号
US2023105(A)
申请公布日期
1935.12.03
申请号
US19320623375
申请日期
1932.07.19
申请人
SMITH JOHN W
发明人
SMITH JOHN W.
分类号
B64C27/04
主分类号
B64C27/04
代理机构
代理人
主权项
地址
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