Hydrometer,申请号US19290390484-传众专利搜索

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发明名称	Hydrometer
摘要
申请公布号	US1898903(A)	申请公布日期	1933.02.21
申请号	US19290390484	申请日期	1929.09.05
申请人	RICHARD SCHRODER	发明人	SCHRODER RICHARD
分类号	G01N9/16	主分类号	G01N9/16
代理机构		代理人
主权项
地址

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