Sound attenuating device,申请号US19350046774-传众专利搜索

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发明名称	Sound attenuating device
摘要
申请公布号	US2127672(A)	申请公布日期	1938.08.23
申请号	US19350046774	申请日期	1935.10.25
申请人	THE MAXIM SILENCER COMPANY	发明人	BOURNE ROLAND B.
分类号	F16L55/027;G10K11/172	主分类号	F16L55/027
代理机构		代理人
主权项
地址

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