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发明名称
摘要
申请公布号
DE1467154(C3)
申请公布日期
1974.01.03
申请号
DE19641467154
申请日期
1964.07.01
申请人
BERGWERKSVERBAND GMBH, 4300 ESSEN
发明人
PIJPERS, FRANCISCUS WILHELMUS;LOOKEREN CAMPAGNE, NICOLAAS VAN
分类号
C01B31/08;(IPC1-7):C01B31/10
主分类号
C01B31/08
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