Pin, bolt, and other connecting device,申请号US19310528430-传众专利搜索

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发明名称	Pin, bolt, and other connecting device
摘要
申请公布号	US1926925(A)	申请公布日期	1933.09.12
申请号	US19310528430	申请日期	1931.04.07
申请人	GULF RESEARCH & DEVELOPMENT CORPORATION	发明人	WESCOTT BLAINE B.
分类号	E21B17/042;F16B31/06	主分类号	E21B17/042
代理机构		代理人
主权项
地址

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