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发明名称
Dispositif pour la fabrication à la presse de forets hélicoïdaux
摘要
申请公布号
FR1132142(A)
申请公布日期
1957.03.05
申请号
FRD1132142
申请日期
1955.10.06
申请人
发明人
GOTZE FRITZ
分类号
B21C23/14;B21C25/00
主分类号
B21C23/14
代理机构
代理人
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