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经营范围
发明名称
Improvements to rotary wing aircraft
摘要
申请公布号
GB732657(A)
申请公布日期
1955.06.29
申请号
GB19500014821
申请日期
1950.06.14
申请人
FRANCIS JAMES ECKINGTON
发明人
分类号
B64C39/00
主分类号
B64C39/00
代理机构
代理人
主权项
地址
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