Balanced shut-off valve,申请号US19520324501-传众专利搜索

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发明名称	Balanced shut-off valve
摘要
申请公布号	US2781997(A)	申请公布日期	1957.02.19
申请号	US19520324501	申请日期	1952.12.06
申请人	RALPH N. BRODIE COMPANY	发明人	BERCK WILLIAM F.
分类号	F16K47/02	主分类号	F16K47/02
代理机构		代理人
主权项
地址

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