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经营范围
发明名称
Rock duster
摘要
申请公布号
US3194443(A)
申请公布日期
1965.07.13
申请号
US19630292017
申请日期
1963.07.01
申请人
THE AMERICAN MINE DOOR COMPANY
发明人
GURNEY GLENN D.
分类号
E21F5/10
主分类号
E21F5/10
代理机构
代理人
主权项
地址
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