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发明名称
SCRAPER CHAIN CONVEYOR ETC.
摘要
申请公布号
GB9111071(D0)
申请公布日期
1991.07.17
申请号
GB19910011071
申请日期
1991.05.22
申请人
GULLICK PITCRAFT LTD
发明人
分类号
E21C29/02;E21C35/12
主分类号
E21C29/02
代理机构
代理人
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