Blinding device for pipe lines,申请号US19470723047-传众专利搜索

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发明名称	Blinding device for pipe lines
摘要
申请公布号	US2615473(A)	申请公布日期	1952.10.28
申请号	US19470723047	申请日期	1947.01.20
申请人	PAUL A. DEWHIRST	发明人	HAMER LELAND S.
分类号	F16K3/312	主分类号	F16K3/312
代理机构		代理人
主权项
地址

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