Binary position indicator,申请号US19630304084-传众专利搜索

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发明名称	Binary position indicator
摘要
申请公布号	US3303573(A)	申请公布日期	1967.02.14
申请号	US19630304084	申请日期	1963.08.23
申请人	ALDER ROBERT L;VARNEY JUSTIN A	发明人	ALDER ROBERT L.;VARNEY JUSTIN A.
分类号	E21B47/022;E21B47/18	主分类号	E21B47/022
代理机构		代理人
主权项
地址

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