Dispositif optique spécialement pour chambres claires,申请号FRD761844-传众专利搜索

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发明名称	Dispositif optique spécialement pour chambres claires
摘要
申请公布号	FR761844(A)	申请公布日期	1934.03.28
申请号	FRD761844	申请日期	1932.12.22
申请人	OPTIQUE ET PRECISION DE LEVALLOIS	发明人
分类号	B43L13/18	主分类号	B43L13/18
代理机构		代理人
主权项
地址

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