Conversion shield for mask window,申请号US19620235963-传众专利搜索

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发明名称	Conversion shield for mask window
摘要
申请公布号	US3147487(A)	申请公布日期	1964.09.08
申请号	US19620235963	申请日期	1962.11.07
申请人	MINE SAFETY APPLIANCES COMPANY	发明人	HOEFTMAN EDWARD L.
分类号	A61F9/06	主分类号	A61F9/06
代理机构		代理人
主权项
地址

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