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经营范围
发明名称
Forming oil grooves in bores
摘要
Bits shaped to the size and number of grooves are set in a ring round an expansible core which presses all equally into the walls of the bore.
申请公布号
DE1960307(A1)
申请公布日期
1970.07.09
申请号
DE19691960307
申请日期
1969.12.02
申请人
VEB STROEMUNGSMASCHINEN
发明人
MARX,HERBERT
分类号
B21H7/18;B21J5/12
主分类号
B21H7/18
代理机构
代理人
主权项
地址
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