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发明名称
Barres fibrées hélicoïdalement pour forets américains
摘要
申请公布号
FR1248087(A)
申请公布日期
1960.12.09
申请号
FR19590808861
申请日期
1959.10.30
申请人
发明人
ORY JACQUES-EDOUARD
分类号
B21D11/14;B21K5/02
主分类号
B21D11/14
代理机构
代理人
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