Pendule électrique d'appel,申请号FRD909690-传众专利搜索

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发明名称	Pendule électrique d'appel
摘要
申请公布号	FR909690(A)	申请公布日期	1946.05.15
申请号	FRD909690	申请日期	1942.08.08
申请人		发明人	CALVEL ROBERT
分类号	G04C21/32	主分类号	G04C21/32
代理机构		代理人
主权项
地址

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