Two-tone air whistle,申请号US19480058660-传众专利搜索

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发明名称	Two-tone air whistle
摘要
申请公布号	US2615968(A)	申请公布日期	1952.10.28
申请号	US19480058660	申请日期	1948.11.06
申请人	THE LIONEL CORPORATION	发明人	BONANNO JOSEPH L.
分类号	A63H5/00	主分类号	A63H5/00
代理机构		代理人
主权项
地址

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