Acoustical ceiling construction,申请号US19320626754-传众专利搜索

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发明名称	Acoustical ceiling construction
摘要
申请公布号	US1997581(A)	申请公布日期	1935.04.16
申请号	US19320626754	申请日期	1932.07.30
申请人	UNITED STATES GYPSUM COMPANY	发明人	HEEREN ARTHUR A.;GIBSON OLIVER E.
分类号	E04B9/26	主分类号	E04B9/26
代理机构		代理人
主权项
地址

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