Hatch cover for ore carrier and tanker,申请号US19540474736-传众专利搜索

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发明名称	Hatch cover for ore carrier and tanker
摘要
申请公布号	US2804039(A)	申请公布日期	1957.08.27
申请号	US19540474736	申请日期	1954.12.13
申请人	AMERICAN-HAWAIIAN STEAMSHIP COMPANY;J. J. HENRY, INC.	发明人	GRAY ROBERT L.;HENRY JAMES J.
分类号	B63B19/18	主分类号	B63B19/18
代理机构		代理人
主权项
地址

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