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发明名称
Variable pitch propeller
摘要
申请公布号
US2239739(A)
申请公布日期
1941.04.29
申请号
US19400312224
申请日期
1940.01.03
申请人
RUTHS ROBERT J;DODSON HARRY L
发明人
RUTHS ROBERT J.;DODSON HARRY L.
分类号
B64C11/04
主分类号
B64C11/04
代理机构
代理人
主权项
地址
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