Improvements in sound insulating materials,申请号GB19310016493-传众专利搜索

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发明名称	Improvements in sound insulating materials
摘要
申请公布号	GB373792(A)	申请公布日期	1932.06.02
申请号	GB19310016493	申请日期	1931.06.05
申请人	JOHN FOX;ERIC RUSSELL HARRAP	发明人
分类号	C04B28/02	主分类号	C04B28/02
代理机构		代理人
主权项
地址

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