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经营范围
发明名称
Improved helicopter
摘要
申请公布号
GB531834(A)
申请公布日期
1941.01.13
申请号
GB19390021583
申请日期
1939.07.25
申请人
STELIAN POPOVICI
发明人
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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