Piston ring oil sealing structure,申请号US19540471241-传众专利搜索

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发明名称	Piston ring oil sealing structure
摘要
申请公布号	US2769675(A)	申请公布日期	1956.11.06
申请号	US19540471241	申请日期	1954.11.26
申请人	MUSKEGON PISTON RING COMPANY	发明人	HAMM DOUGLAS W.
分类号	F16J9/06	主分类号	F16J9/06
代理机构		代理人
主权项
地址

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