Line blind gate valve,申请号US19540472973-传众专利搜索

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发明名称	Line blind gate valve
摘要
申请公布号	US2820482(A)	申请公布日期	1958.01.21
申请号	US19540472973	申请日期	1954.12.03
申请人	GREENWOOD DOLPHICE H	发明人	GREENWOOD DOLPHICE H.
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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