Axel Kirsch,Walter Duerr,Volker Brinkmann,Karl-Heinz Danger
申请号：
US14655768
公开号：
US09770309B2
申请日:
2013.12.19
申请国别(地区):
US
年份:
2017
代理人:
摘要：
The present invention refers to a shaft of a dental tool comprising a distal end region, a cylindrical shaft region adjoining the distal end region, and a proximal end region which lies opposite the distal end region and which is provided with a polygonal profile that tapers conically in the direction of the distal end region and adjoins a tool part.
