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发明名称
VIS INDESSERRABLE ET SON PROCEDE DE FABRICATION
摘要
The thread produced on the shank (2a) of the screw (2) has, over a specific portion (3) of its length, a thread depth which first of all decreases and then increases again. <IMAGE>
申请公布号
FR2485121(A1)
申请公布日期
1981.12.24
申请号
FR19800014157
申请日期
1980.06.20
申请人
SOFRARIV FRAPPE RIVETS
发明人
HENRI RODET
分类号
B21H3/02;F16B39/30;(IPC1-7):F16B39/30
主分类号
B21H3/02
代理机构
代理人
主权项
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