Return top having conical apertures for producing sound,申请号US19610137946-传众专利搜索

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发明名称	Return top having conical apertures for producing sound
摘要
申请公布号	US3156068(A)	申请公布日期	1964.11.10
申请号	US19610137946	申请日期	1961.09.08
申请人	DONALD F. DUNCAN, INC.	发明人	NELLIGAN JAMES H.
分类号	A63H1/30	主分类号	A63H1/30
代理机构		代理人
主权项
地址

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