Improvements in and relating to valve devices for use with electric switches,申请号GB19390002303-传众专利搜索

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发明名称	Improvements in and relating to valve devices for use with electric switches
摘要
申请公布号	GB509685(A)	申请公布日期	1939.07.19
申请号	GB19390002303	申请日期	1939.01.23
申请人	THE BRITISH THOMSON-HOUSTON COMPANY, LIMITED	发明人
分类号	H01H33/32	主分类号	H01H33/32
代理机构		代理人
主权项
地址

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