Tooth for slips,申请号US19390285040-传众专利搜索

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发明名称	Tooth for slips
摘要
申请公布号	US2288851(A)	申请公布日期	1942.07.07
申请号	US19390285040	申请日期	1939.07.18
申请人	MISSION MANUFACTURING COMPANY	发明人	SHARP DUDLEY C.
分类号	E21B19/10	主分类号	E21B19/10
代理机构		代理人
主权项
地址

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