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经营范围
发明名称
Improvements in or relating to hollow aircraft propeller blades
摘要
申请公布号
GB659344(A)
申请公布日期
1951.10.24
申请号
GB19490011179
申请日期
1949.04.27
申请人
UNITED AIRCRAFT CORPORATION
发明人
分类号
B21D53/78
主分类号
B21D53/78
代理机构
代理人
主权项
地址
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