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经营范围
发明名称
Mine stopping
摘要
申请公布号
AU7203500(A)
申请公布日期
2001.06.21
申请号
AU20000072035
申请日期
2000.12.06
申请人
JACK KENNEDY METAL PRODUCTS AND BUILDINGS, INC.
发明人
WILLIAM R. KENNEDY;JOHN M. KENNEDY
分类号
E21F1/14
主分类号
E21F1/14
代理机构
代理人
主权项
地址
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