Lubricated plug valve,申请号US19290385276-传众专利搜索

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发明名称	Lubricated plug valve
摘要
申请公布号	US1964782(A)	申请公布日期	1934.07.03
申请号	US19290385276	申请日期	1929.08.12
申请人	WALWORTH PATENTS INC.	发明人	BARD FRANCIS NORWOOD
分类号	F16K5/22	主分类号	F16K5/22
代理机构		代理人
主权项
地址

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