Щиток для опробования вертикальных выработок,申请号SU19320118904-传众专利搜索

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发明名称	Щиток для опробования вертикальных выработок
摘要
申请公布号	SU35788(A1)	申请公布日期	1934.04.30
申请号	SU19320118904	申请日期	1932.11.20
申请人	GUSENIKOV A.D.	发明人	GUSENIKOV A.D.
分类号	E21D1/00	主分类号	E21D1/00
代理机构		代理人
主权项
地址

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