Closure for cylindrical openings,申请号US19450610141-传众专利搜索

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发明名称	Closure for cylindrical openings
摘要
申请公布号	US2442964(A)	申请公布日期	1948.06.08
申请号	US19450610141	申请日期	1945.08.10
申请人	SIMONSEN CHARLES W	发明人	SIMONSEN CHARLES W.
分类号	F16N21/06	主分类号	F16N21/06
代理机构		代理人
主权项
地址

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