Gas meter calibration apparatus,申请号US19600004367-传众专利搜索

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发明名称	Gas meter calibration apparatus
摘要
申请公布号	US2987911(A)	申请公布日期	1961.06.13
申请号	US19600004367	申请日期	1960.01.25
申请人	MCDONELL WILLIAM C	发明人	MCDONELL WILLIAM C.
分类号	G01F25/00	主分类号	G01F25/00
代理机构		代理人
主权项
地址

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