Plaquettes interchangeables destinées à faciliter le réglage des postes radioélectriques,申请号FRD697960-传众专利搜索

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发明名称	Plaquettes interchangeables destinées à faciliter le réglage des postes radioélectriques
摘要
申请公布号	FR697960(A)	申请公布日期	1931.01.26
申请号	FRD697960	申请日期	1929.09.30
申请人		发明人	MICHEL MARCEL
分类号	H03J1/04	主分类号	H03J1/04
代理机构		代理人
主权项
地址

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