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经营范围
发明名称
Improvements in or relating to pit props
摘要
申请公布号
GB401330(A)
申请公布日期
1933.11.09
申请号
GB19320003892
申请日期
1932.02.09
申请人
HEINRICH TOUSSAINT;BOCHUMER EISENHUTTE, HEINTZMANN & COMPANY, G.M.B.H.
发明人
分类号
E21D15/582;E21D15/60
主分类号
E21D15/582
代理机构
代理人
主权项
地址
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