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发明名称
Perfectionnements aux hélices à pas variables
摘要
申请公布号
FR1290140(A)
申请公布日期
1962.04.13
申请号
FR19600841330
申请日期
1960.10.15
申请人
DOWTY ROTOL LIMITED
发明人
分类号
B64C11/38
主分类号
B64C11/38
代理机构
代理人
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