Пневматическая поддержка для бурильных молотков,申请号SU19490394592-传众专利搜索

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发明名称	Пневматическая поддержка для бурильных молотков
摘要
申请公布号	SU83304(A1)	申请公布日期	1949.11.30
申请号	SU19490394592	申请日期	1949.04.01
申请人	DOBROBORSKIJ S.I.	发明人	DOBROBORSKIJ S.I.
分类号	E21B19/086;E21B15/00	主分类号	E21B19/086
代理机构		代理人
主权项
地址

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