Nouveau système d'appareils logarithmiques à calculer,申请号FRD849800-传众专利搜索

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发明名称	Nouveau système d'appareils logarithmiques à calculer
摘要
申请公布号	FR849800(A)	申请公布日期	1939.12.01
申请号	FRD849800	申请日期	1939.02.03
申请人		发明人	CALOCAIRINOS
分类号	G06G1/12	主分类号	G06G1/12
代理机构		代理人
主权项
地址

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