Способ и устройство для проходки шахт,申请号SU19390025636-传众专利搜索

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发明名称	Способ и устройство для проходки шахт
摘要
申请公布号	SU58045(A1)	申请公布日期	1939.11.30
申请号	SU19390025636	申请日期	1939.07.23
申请人	SHCHSPOTEV K.N.	发明人	SHCHSPOTEV K.N.
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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