Stabilizer,申请号US19300440975-传众专利搜索

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发明名称	Stabilizer
摘要
申请公布号	US1820391(A)	申请公布日期	1931.08.25
申请号	US19300440975	申请日期	1930.04.02
申请人	WALTER HARTMAN WILLIAM	发明人	HARTMAN WILLIAM WALTER
分类号	E21B17/10	主分类号	E21B17/10
代理机构		代理人
主权项
地址

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