Self-holding plug,申请号US19370134833-传众专利搜索

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发明名称	Self-holding plug
摘要
申请公布号	US2134475(A)	申请公布日期	1938.10.25
申请号	US19370134833	申请日期	1937.04.03
申请人	GREEN RAYMOND V	发明人	GREEN RAYMOND V.
分类号	B65H75/24	主分类号	B65H75/24
代理机构		代理人
主权项
地址

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