Seal for preventing the flow of material between relatively moving surfaces,申请号US19280292253-传众专利搜索

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发明名称	Seal for preventing the flow of material between relatively moving surfaces
摘要
申请公布号	US1757533(A)	申请公布日期	1930.05.06
申请号	US19280292253	申请日期	1928.07.12
申请人	LEWIS WARREN B	发明人	LEWIS WARREN B.
分类号	D21D5/06	主分类号	D21D5/06
代理机构		代理人
主权项
地址

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