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发明名称
Improvements relating to control apparatus for colliery and other like winding engines
摘要
申请公布号
GB502632(A)
申请公布日期
1939.03.22
申请号
GB19370036211
申请日期
1937.12.31
申请人
GEORGE JAMES FORBES BLACK
发明人
分类号
B66B1/12
主分类号
B66B1/12
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代理人
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