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经营范围
发明名称
Improvements in and relating to depth indicators for mine cages and the like
摘要
申请公布号
GB651737(A)
申请公布日期
1951.04.11
申请号
GB19480004040
申请日期
1948.02.11
申请人
THE BRITISH THOMSON-HOUSTON COMPANY LIMITED;THOMAS HAYES PETCH, JR.
发明人
分类号
B66B3/02
主分类号
B66B3/02
代理机构
代理人
主权项
地址
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