Underwater breathing devices,申请号US19540460572-传众专利搜索

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发明名称	Underwater breathing devices
摘要
申请公布号	US2810387(A)	申请公布日期	1957.10.22
申请号	US19540460572	申请日期	1954.10.06
申请人	ARPIN LEON G;ARPIN JR LEON G	发明人	ARPIN LEON G.;JR. LEON G. ARPIN,
分类号	B63C11/18;B63C11/22	主分类号	B63C11/18
代理机构		代理人
主权项
地址

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