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发明名称
Auxiliary rotor for helicopters
摘要
申请公布号
US2581923(A)
申请公布日期
1952.01.08
申请号
US19470787904
申请日期
1947.11.25
申请人
THE FIRESTONE TIRE & RUBBER COMPANY
发明人
CAMPBELL HARRIS S.
分类号
B64C27/82
主分类号
B64C27/82
代理机构
代理人
主权项
地址
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