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经营范围
发明名称
A boring machine for mining coal, or for tunnelling in the earth
摘要
申请公布号
GB754974(A)
申请公布日期
1956.08.15
申请号
GB19540018310
申请日期
1954.06.22
申请人
THOMAS MOYNIHAN;THOMAS CHAMLEY MOYNIHAN;DENYS MOYNIHAN
发明人
分类号
E21C27/22
主分类号
E21C27/22
代理机构
代理人
主权项
地址
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