Improvements in or relating to welding masks,申请号GB19440020861-传众专利搜索

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发明名称	Improvements in or relating to welding masks
摘要
申请公布号	GB578074(A)	申请公布日期	1946.06.13
申请号	GB19440020861	申请日期	1944.10.26
申请人	JOHN ALGERNON LAUNDER	发明人
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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