Improved methods of making spark plugs,申请号GB19430001808-传众专利搜索

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发明名称	Improved methods of making spark plugs
摘要
申请公布号	GB560516(A)	申请公布日期	1944.04.06
申请号	GB19430001808	申请日期	1943.02.03
申请人	GENERAL MOTORS CORPORATION	发明人
分类号	C04B41/50;C04B41/86;H01T21/02	主分类号	C04B41/50
代理机构		代理人
主权项
地址

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