An improved method of filling respiratory filters,申请号GB19330006856-传众专利搜索

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发明名称	An improved method of filling respiratory filters
摘要
申请公布号	GB396323(A)	申请公布日期	1933.08.03
申请号	GB19330006856	申请日期	1933.03.07
申请人	BERNHARD DRAGER	发明人
分类号	A62B23/00	主分类号	A62B23/00
代理机构		代理人
主权项
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