Rod spider,申请号US19270242450-传众专利搜索

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法人/股东/高管

发明名称	Rod spider
摘要
申请公布号	US1755986(A)	申请公布日期	1930.04.22
申请号	US19270242450	申请日期	1927.12.24
申请人	JOHN J. FERLIN	发明人	GOETZ HERBERT W.;CLARK RALPH 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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