SCREW THREAD STRUCTURE,申请号US19900529575-传众专利搜索

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发明名称	SCREW THREAD STRUCTURE
摘要
申请公布号	US5056611(A)	申请公布日期	1991.10.15
申请号	US19900529575	申请日期	1990.05.29
申请人	GALLOWAY TRUST	发明人	YOUSEF, FAISAL J.;KANE, ROBERT F.;HAM, JOEL;MILDREN, DAVID
分类号	E21B17/042;F16B31/06;F16B33/02	主分类号	E21B17/042
代理机构		代理人
主权项
地址

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