Device for winding up spring-driven clockworks of toy vehicles,申请号US19380245485-传众专利搜索

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发明名称	Device for winding up spring-driven clockworks of toy vehicles
摘要
申请公布号	US2160738(A)	申请公布日期	1939.05.30
申请号	US19380245485	申请日期	1938.12.13
申请人	ERNST HORN	发明人	HORN ERNST
分类号	A63H29/24	主分类号	A63H29/24
代理机构		代理人
主权项
地址

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