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经营范围
发明名称
Hollow metal propeller blade
摘要
申请公布号
US2293801(A)
申请公布日期
1942.08.25
申请号
US19380232817
申请日期
1938.10.01
申请人
UNITED AIRCRAFT CORPORATION
发明人
CALDWELL FRANK W.
分类号
B64C11/24
主分类号
B64C11/24
代理机构
代理人
主权项
地址
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