Буровой замок буросбоечной машины,申请号SU19500410780-传众专利搜索

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发明名称	Буровой замок буросбоечной машины
摘要
申请公布号	SU88478(A1)	申请公布日期	1950.11.30
申请号	SU19500410780	申请日期	1950.01.20
申请人	BALAGANSKIJ S.E.	发明人	BALAGANSKIJ S.E.
分类号	E21B3/00;E21B17/03	主分类号	E21B3/00
代理机构		代理人
主权项
地址

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