Safety feature for electric watertight door systems,申请号US19530387333-传众专利搜索

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发明名称	Safety feature for electric watertight door systems
摘要
申请公布号	US2828449(A)	申请公布日期	1958.03.25
申请号	US19530387333	申请日期	1953.10.20
申请人	KERPER IRVING L	发明人	KERPER IRVING L.
分类号	B63B19/00	主分类号	B63B19/00
代理机构		代理人
主权项
地址

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