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经营范围
发明名称
Perfectionnements aux hélices
摘要
申请公布号
FR711797(A)
申请公布日期
1931.09.17
申请号
FRD711797
申请日期
1931.02.23
申请人
发明人
SCHALLERT RICHARD
分类号
B64C11/00
主分类号
B64C11/00
代理机构
代理人
主权项
地址
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