Manufacture of slotted oil control and like rings,申请号US19470758559-传众专利搜索

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发明名称	Manufacture of slotted oil control and like rings
摘要
申请公布号	US2589590(A)	申请公布日期	1952.03.18
申请号	US19470758559	申请日期	1947.07.02
申请人	WELLWORTHY PISTON RINGS LIMITED	发明人	WOOLCOTT ARTHUR J.
分类号	B23C3/22	主分类号	B23C3/22
代理机构		代理人
主权项
地址

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