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经营范围
发明名称
ROTATABLE AIRFOILS
摘要
申请公布号
GB1247966(A)
申请公布日期
1971.09.29
申请号
GB19690021269
申请日期
1969.04.25
申请人
BELL AEROSPACE CORPORATION
发明人
分类号
B64C27/46
主分类号
B64C27/46
代理机构
代理人
主权项
地址
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