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发明名称
Directional control system for rotary wing aircraft having contra-rotating load-carrying rotors
摘要
申请公布号
US2829721(A)
申请公布日期
1958.04.08
申请号
US19540464938
申请日期
1954.10.27
申请人
GYRODYNE COMPANY OF AMERICA, INC.
发明人
GEBHARD DAVID F.
分类号
B64C11/48;B64C27/615
主分类号
B64C11/48
代理机构
代理人
主权项
地址
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