Flapping wing toy,申请号US19490098229-传众专利搜索

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发明名称	Flapping wing toy
摘要
申请公布号	US2637937(A)	申请公布日期	1953.05.12
申请号	US19490098229	申请日期	1949.06.10
申请人	EUGENE POLK WILLIAM	发明人	POLK WILLIAM EUGENE
分类号	A63H7/00	主分类号	A63H7/00
代理机构		代理人
主权项
地址

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