Hollow head poppet valve,申请号US19400354787-传众专利搜索

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发明名称	Hollow head poppet valve
摘要
申请公布号	US2354947(A)	申请公布日期	1944.08.01
申请号	US19400354787	申请日期	1940.08.30
申请人	THOMPSON PRODUCTS INCORPORATED	发明人	COLWELL ARCHIE T.
分类号	B23P15/00;F01L3/00;F01L3/14	主分类号	B23P15/00
代理机构		代理人
主权项
地址

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