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发明名称
Improvements in or relating to the automatic remote control of mine roof supports
摘要
申请公布号
GB1121541(A)
申请公布日期
1968.07.31
申请号
GB19650006318
申请日期
1965.02.13
申请人
GULLICK LIMITED
发明人
WARD RICHARD
分类号
E21D23/12;E21D23/14;G05B19/14
主分类号
E21D23/12
代理机构
代理人
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地址
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