Roller skate wheel,申请号US19500178503-传众专利搜索

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发明名称	Roller skate wheel
摘要
申请公布号	US2622930(A)	申请公布日期	1952.12.23
申请号	US19500178503	申请日期	1950.08.09
申请人	NOEL PRECISION CORPORATION	发明人	NEGRI FRANK G.
分类号	A63C17/22	主分类号	A63C17/22
代理机构		代理人
主权项
地址

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