Discharge valve for tank cars,申请号US19310547757-传众专利搜索

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发明名称	Discharge valve for tank cars
摘要
申请公布号	US1985858(A)	申请公布日期	1934.12.25
申请号	US19310547757	申请日期	1931.06.29
申请人	FRIEDRICH GERDTS GUSTAV	发明人	GERDTS GUSTAV FRIEDRICH
分类号	F16K27/07	主分类号	F16K27/07
代理机构		代理人
主权项
地址

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