Acoustical unit with attenuation means,申请号US19590804392-传众专利搜索

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发明名称	Acoustical unit with attenuation means
摘要
申请公布号	US3021915(A)	申请公布日期	1962.02.20
申请号	US19590804392	申请日期	1959.04.06
申请人	KEMP WILLIAM G	发明人	KEMP WILLIAM G.
分类号	E04B9/00	主分类号	E04B9/00
代理机构		代理人
主权项
地址

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