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经营范围
发明名称
Shifting means, especially for shifting face conveyors
摘要
申请公布号
GB726730(A)
申请公布日期
1955.03.23
申请号
GB19530011906
申请日期
1953.04.29
申请人
FRITZ BOTHE
发明人
分类号
E21F13/08
主分类号
E21F13/08
代理机构
代理人
主权项
地址
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