Shock absorber for weight indicators,申请号US19500181868-传众专利搜索

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发明名称	Shock absorber for weight indicators
摘要
申请公布号	US2680006(A)	申请公布日期	1954.06.01
申请号	US19500181868	申请日期	1950.08.28
申请人	BROCK JOHN W	发明人	BROCK JOHN W.
分类号	E21B19/02;F16F15/067	主分类号	E21B19/02
代理机构		代理人
主权项
地址

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