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发明名称
CHAIN GUIDE FOR MECHANICAL COAL MINERS
摘要
申请公布号
PL261013(A1)
申请公布日期
1988.05.26
申请号
PL19860261013
申请日期
1986.08.11
申请人
发明人
分类号
B65G19/28;E21C;E21C35/12;(IPC1-7):E21C/
主分类号
B65G19/28
代理机构
代理人
主权项
地址
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