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经营范围
发明名称
Improvements in or relating to apparatus for controlling the pitch variations of propellers
摘要
申请公布号
GB573931(A)
申请公布日期
1945.12.13
申请号
GB19410004976
申请日期
1941.04.16
申请人
PIERRE PAUL RATIE;RENE JEAN RATIE
发明人
分类号
B64C11/44
主分类号
B64C11/44
代理机构
代理人
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