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发明名称
Perfectionnements apportés aux appareils hydrocopiants différentiels
摘要
申请公布号
FR1115758(A)
申请公布日期
1956.04.30
申请号
FRD1115758
申请日期
1954.12.03
申请人
发明人
BEAUCHET JEAN
分类号
B24B17/08
主分类号
B24B17/08
代理机构
代理人
主权项
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