Einrichtung zur Verstärkung schwacher elektrischer Ströme.,申请号CHD154357-传众专利搜索

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发明名称	Einrichtung zur Verstärkung schwacher elektrischer Ströme.
摘要
申请公布号	CH154357(A)	申请公布日期	1932.04.30
申请号	CHD154357	申请日期	1929.04.27
申请人	WM. H. BRISTOL TALKING PICTURE CORPORATION	发明人	WM. H. BRISTOL TALKING PICTURE CORPORATION
分类号	H03F3/32	主分类号	H03F3/32
代理机构		代理人
主权项
地址

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