Sample taking apparatus,申请号US19320613882-传众专利搜索

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发明名称	Sample taking apparatus
摘要
申请公布号	US1952170(A)	申请公布日期	1934.03.27
申请号	US19320613882	申请日期	1932.05.27
申请人	REED ROLLER BIT COMPANY	发明人	HUMASON GRANVILLE A.;LOGAN JAMES A.
分类号	E21B25/00	主分类号	E21B25/00
代理机构		代理人
主权项
地址

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