Coupling,申请号US19340708220-传众专利搜索

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法人/股东/高管

发明名称	Coupling
摘要
申请公布号	US1999706(A)	申请公布日期	1935.04.30
申请号	US19340708220	申请日期	1934.01.25
申请人	SPANG FERDINAND J	发明人	SPANG FERDINAND J.
分类号	E21B17/042;F16L15/08	主分类号	E21B17/042
代理机构		代理人
主权项
地址

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