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发明名称
Ram device for advancing mining equipment
摘要
申请公布号
GB1009622(A)
申请公布日期
1965.11.10
申请号
GB19620016029
申请日期
1962.04.26
申请人
HEDWIG BEUKENBERG;HANS BEUKENBERG;KLAUS BEUKENBERG
发明人
分类号
E21F13/08
主分类号
E21F13/08
代理机构
代理人
主权项
地址
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