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发明名称
Dual rotation coaxial propeller mechanism
摘要
申请公布号
US2679907(A)
申请公布日期
1954.06.01
申请号
US19500162728
申请日期
1950.05.18
申请人
UNITED AIRCRAFT CORPORATION
发明人
FRANKLAND EARL M.
分类号
B64C11/30
主分类号
B64C11/30
代理机构
代理人
主权项
地址
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