Nachgiebiger eiserner Grubenausbau,申请号DE1942G002546D-传众专利搜索

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发明名称	Nachgiebiger eiserner Grubenausbau
摘要
申请公布号	DE976721(C)	申请公布日期	1964.03.19
申请号	DE1942G002546D	申请日期	1942.11.05
申请人	GROETSCHEL KARL MARIA DIPL.-BERGING.	发明人	GROETSCHEL KARL MARIA DIPL.-BERGING.
分类号	E21D11/22	主分类号	E21D11/22
代理机构		代理人
主权项
地址

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