Signalling device for photocopy machine,申请号US19520325600-传众专利搜索

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发明名称	Signalling device for photocopy machine
摘要
申请公布号	US2752443(A)	申请公布日期	1956.06.26
申请号	US19520325600	申请日期	1952.12.12
申请人	THE HALOID COMPANY	发明人	SABEL EDWARD R.;GALBRECHT FRANK I.
分类号	G03B19/04	主分类号	G03B19/04
代理机构		代理人
主权项
地址

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