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发明名称
Access shaft
摘要
Access shaft has levelling and cone rings engaging via mating tongues and grooves to prevent relative movement
申请公布号
CH674039(A5)
申请公布日期
1990.04.30
申请号
CH19870003444
申请日期
1987.09.07
申请人
SEMMELROCK KG BETON- UND BAUSTOFFINDUSTRIE
发明人
SEMMELROCK, WILFRIED, DIPL.-ING.;SEMMELROCK, WOLFGANG
分类号
E02D29/12
主分类号
E02D29/12
代理机构
代理人
主权项
地址
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