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发明名称
Floor clean-up mechanism for continuous mining apparatus
摘要
申请公布号
US2908374(A)
申请公布日期
1959.10.13
申请号
US19550524791
申请日期
1955.07.27
申请人
JOY MANUFACTURING COMPANY
发明人
RUSSELL JOHN D.
分类号
E21C35/20
主分类号
E21C35/20
代理机构
代理人
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地址
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