Valve seat replacement,申请号US19320604449-传众专利搜索

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发明名称	Valve seat replacement
摘要
申请公布号	US2044950(A)	申请公布日期	1936.06.23
申请号	US19320604449	申请日期	1932.04.11
申请人	LOUIS MELLINKOFF	发明人	MELLINKOFF LOUIS
分类号	B23C3/05	主分类号	B23C3/05
代理机构		代理人
主权项
地址

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