Respirator with integral rib for clamping filter element and sealing breathing opening,申请号US19570656031-传众专利搜索

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发明名称	Respirator with integral rib for clamping filter element and sealing breathing opening
摘要
申请公布号	US2845927(A)	申请公布日期	1958.08.05
申请号	US19570656031	申请日期	1957.04.30
申请人	FLEXO PRODUCTS, INCORPORATED	发明人	HILL JOHN D.
分类号	A62B23/02	主分类号	A62B23/02
代理机构		代理人
主权项
地址

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