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经营范围
发明名称
Aus zwei wellenfoermigen, nebeneinanderliegenden und miteinander verbundenen Traegern bestehendes Segment eines bogenfoermigen Grubenausbaurahmens
摘要
申请公布号
DE647248(C)
申请公布日期
1937.06.30
申请号
DE1935SC06001D
申请日期
1935.01.13
申请人
HERMANN SCHWARZ KOMM.-GES.
发明人
分类号
E21D11/18
主分类号
E21D11/18
代理机构
代理人
主权项
地址
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