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发明名称
Mine haulage system and apparatus therefor
摘要
申请公布号
US2264007(A)
申请公布日期
1941.11.25
申请号
US19400339570
申请日期
1940.06.08
申请人
JOY MANUFACTURING COMPANY
发明人
RUSSELL JOHN D.
分类号
E21F13/06
主分类号
E21F13/06
代理机构
代理人
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地址
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