Plug type pipe closure,申请号US19430487847-传众专利搜索

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发明名称	Plug type pipe closure
摘要
申请公布号	US2356987(A)	申请公布日期	1944.08.29
申请号	US19430487847	申请日期	1943.05.21
申请人	KEY COMPANY	发明人	GALLOP JOSEPH W.
分类号	F16J13/12	主分类号	F16J13/12
代理机构		代理人
主权项
地址

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