Optical signal device,申请号US19280258812-传众专利搜索

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发明名称	Optical signal device
摘要
申请公布号	US1764622(A)	申请公布日期	1930.06.17
申请号	US19280258812	申请日期	1928.03.03
申请人	AMERICAN GASACCUMULATOR COMPANY	发明人	GOODWIN GEORGE
分类号	F21V5/00;F21V5/04	主分类号	F21V5/00
代理机构		代理人
主权项
地址

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