PROJECTION APPARATUS HAVING MULTIPLE SOUND UNIT,申请号USD3508816-传众专利搜索

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发明名称	PROJECTION APPARATUS HAVING MULTIPLE SOUND UNIT
摘要
申请公布号	US3508816(A)	申请公布日期	1970.04.28
申请号	USD3508816	申请日期	1967.05.26
申请人	ANGELO BOTTANI	发明人	ANGELO BOTTANI
分类号	G03B31/00;(IPC1-7):G03B31/02	主分类号	G03B31/00
代理机构		代理人
主权项
地址

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