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发明名称
Adjustable pitch propeller
摘要
申请公布号
US2097643(A)
申请公布日期
1937.11.02
申请号
US19310531696
申请日期
1931.04.21
申请人
FRANK RAGGIO
发明人
RAGGIO FRANK
分类号
B64C11/34
主分类号
B64C11/34
代理机构
代理人
主权项
地址
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