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发明名称
Dispositif d'hélice à pales interchangeables, en acier non usinable, pour le travail des matériaux abrasifs
摘要
申请公布号
FR975749(A)
申请公布日期
1951.03.08
申请号
FRD975749
申请日期
1948.11.16
申请人
发明人
BORRONI PIERRE
分类号
A01B33/10;B63H1/12
主分类号
A01B33/10
代理机构
代理人
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