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发明名称
Screwspike
摘要
The washer (2) is secured by at least three plastic protrusions (3) which lie equally spaced around the edge of the screw (1) shaft to prevent slipping.
申请公布号
AU4585099(A)
申请公布日期
2000.05.18
申请号
AU19990045850
申请日期
1999.09.02
申请人
SCHRAUBENWERK ZERBST GMBH
发明人
ECKHARD SCHMIDT
分类号
E01B9/10;E01B9/12
主分类号
E01B9/10
代理机构
代理人
主权项
地址
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