Well casing cleaning device,申请号US19310518843-传众专利搜索

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发明名称	Well casing cleaning device
摘要
申请公布号	US1875413(A)	申请公布日期	1932.09.06
申请号	US19310518843	申请日期	1931.02.27
申请人	BENJAMIN BRALY HOMER	发明人	BRALY HOMER BENJAMIN
分类号	E21B37/02	主分类号	E21B37/02
代理机构		代理人
主权项
地址

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