Expanded perlite-based sound absorbing material,申请号IT19870048710-传众专利搜索

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发明名称	Expanded perlite-based sound absorbing material
摘要
申请公布号	IT1221521(B)	申请公布日期	1990.07.06
申请号	IT19870048710	申请日期	1987.12.15
申请人	NIPI SA ISGRASHDANE NA MATERIALNATA I TECHNICHESKA BASAV DUHOVNATA OBALST	发明人	VELTCHEV NIKOLA ANDONOV;DONTCHEV DONTSCHO TRIFONOV;TZERNORETCHKI OGNYAN STEFANOV;BLAGOEV BLAGOY SPASSOV;ARKALIEV ILIAN GEORGIEV
分类号	E04B;(IPC1-7):E04B/	主分类号	E04B
代理机构		代理人
主权项
地址

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