Wiper device for drill pipe,申请号US19540456481-传众专利搜索

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发明名称	Wiper device for drill pipe
摘要
申请公布号	US2809387(A)	申请公布日期	1957.10.15
申请号	US19540456481	申请日期	1954.09.16
申请人	FULLERTON MANUFACTURING COMPANY	发明人	PAISO RUDOLPH
分类号	E21B33/08	主分类号	E21B33/08
代理机构		代理人
主权项
地址

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