RESPIRATOR WITH INTERCHANGEABLE FILTERS,申请号CAD536859-传众专利搜索

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发明名称	RESPIRATOR WITH INTERCHANGEABLE FILTERS
摘要
申请公布号	CA536859(A)	申请公布日期	1957.02.05
申请号	CAD536859	申请日期
申请人	MINE SAFETY APPLIANCES COMPANY	发明人	ROBERT B. EVANS
分类号		主分类号
代理机构		代理人
主权项
地址

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