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发明名称
Counterrotating propeller
摘要
申请公布号
US2312624(A)
申请公布日期
1943.03.02
申请号
US19390311890
申请日期
1939.12.30
申请人
UNITED AIRCRAFT CORPORATION
发明人
CALDWELL FRANK W.
分类号
B64D35/06;B64D35/08
主分类号
B64D35/06
代理机构
代理人
主权项
地址
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