Curseur à champ visuel entièrement libre pour règles à calcul,申请号FRD836025-传众专利搜索

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发明名称	Curseur à champ visuel entièrement libre pour règles à calcul
摘要
申请公布号	FR836025(A)	申请公布日期	1939.01.09
申请号	FRD836025	申请日期	1938.04.01
申请人	A. W. FABER CASTELL-BLEISTIFT-FABRIK A.-G.	发明人
分类号	G06G1/06	主分类号	G06G1/06
代理机构		代理人
主权项
地址

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