Method of and means for closing piston rings,申请号US19370133454-传众专利搜索

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发明名称	Method of and means for closing piston rings
摘要
申请公布号	US2140682(A)	申请公布日期	1938.12.20
申请号	US19370133454	申请日期	1937.03.27
申请人	WILLIAM STRAUSS	发明人	STRAUSS WILLIAM
分类号	B23P15/06	主分类号	B23P15/06
代理机构		代理人
主权项
地址

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