Improvements in respirator masks, especially oxygen masks for aircrews,申请号GB19450020720-传众专利搜索

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发明名称	Improvements in respirator masks, especially oxygen masks for aircrews
摘要
申请公布号	GB591531(A)	申请公布日期	1947.08.20
申请号	GB19450020720	申请日期	1945.08.13
申请人	JOHN CARY GILSON	发明人
分类号	A62B18/02	主分类号	A62B18/02
代理机构		代理人
主权项
地址

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