Improvements in breathing apparatus,申请号GB19570028759-传众专利搜索

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发明名称	Improvements in breathing apparatus
摘要
申请公布号	GB901334(A)	申请公布日期	1962.07.18
申请号	GB19570028759	申请日期	1957.09.12
申请人	MINISTER OF POWER	发明人	HARTWELL FRANCIS JOHN
分类号	A62B7/06	主分类号	A62B7/06
代理机构		代理人
主权项
地址

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