Разгрузочная головка для скипа,申请号SU19390026987-传众专利搜索

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发明名称	Разгрузочная головка для скипа
摘要
申请公布号	SU61952(A1)	申请公布日期	1941.11.30
申请号	SU19390026987	申请日期	1939.10.14
申请人	ZUBKOV I.E.	发明人	ZUBKOV I.E.
分类号	E21C41/18;E21C41/22	主分类号	E21C41/18
代理机构		代理人
主权项
地址

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