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发明名称
Hélice en acier trempé à pas variable par double flexion, correcteur et procéé de fabrication
摘要
申请公布号
FR688905(A)
申请公布日期
1930.08.30
申请号
FRD688905
申请日期
1929.04.16
申请人
发明人
SEILLIERE SERGE-RAYMOND
分类号
B64C11/30
主分类号
B64C11/30
代理机构
代理人
主权项
地址
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