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发明名称
Verfahren und Vorrichtung zum Steuern der Fortbewegung einer gleitenden Abbaukammer
摘要
申请公布号
DE849538(C)
申请公布日期
1952.09.15
申请号
DE1950H005147
申请日期
1950.08.31
申请人
HAMEL ARTHUR;HAMEL ALBERT
发明人
HAMEL ARTHUR;HAMEL ALBERT
分类号
E21D23/00
主分类号
E21D23/00
代理机构
代理人
主权项
地址
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