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发明名称
Schraemwalze mit spiralfoermig auf der Walze angeordneten Fuehrungsleisten
摘要
申请公布号
DE1267636(B)
申请公布日期
1968.05.09
申请号
DE19641267636
申请日期
1964.04.08
申请人
COAL INDUSTRY (PATENTS) LIMITED
发明人
NUNN JOHN WILLIAM;WHITTAKER DONALD
分类号
E21C25/10
主分类号
E21C25/10
代理机构
代理人
主权项
地址
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