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发明名称
STEEL HOLLOW-HEAD SCREW
摘要
The invention relates to a hollow-head screw which is made by simple successive cold working operations using a steel comprising between 0.15 and 0.25 % of carbon.
申请公布号
WO2004004944(A2)
申请公布日期
2004.01.15
申请号
WO2003FR02068
申请日期
2003.07.03
申请人
VALMEX;VIRGL, ALAIN;LEROUX, MAXIME
发明人
VIRGL, ALAIN;LEROUX, MAXIME
分类号
B21K1/46;C22C38/02;C22C38/04;C22C38/32
主分类号
B21K1/46
代理机构
代理人
主权项
地址
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