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发明名称
ROTARY CUTTER HEADS FOR MINING MACHINES
摘要
申请公布号
GB2062725(B)
申请公布日期
1983.07.20
申请号
GB19790039749
申请日期
1979.11.16
申请人
COAL INDUSTRY (PATENTS) LTD
发明人
分类号
E21C25/10;E21C35/23;(IPC1-7):E21C35/22
主分类号
E21C25/10
代理机构
代理人
主权项
地址
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