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经营范围
发明名称
Variable pitch and reversible pitch propeller
摘要
申请公布号
US2480468(A)
申请公布日期
1949.08.30
申请号
US19460700280
申请日期
1946.09.30
申请人
DOUGLAS HOINVILLE FREDERICK
发明人
HOINVILLE FREDERICK DOUGLAS
分类号
B64C11/42
主分类号
B64C11/42
代理机构
代理人
主权项
地址
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