Process and apparatus for volume range expansion applied to the reproduction of electric oscillations,申请号GB19370018889-传众专利搜索

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发明名称	Process and apparatus for volume range expansion applied to the reproduction of electric oscillations
摘要
申请公布号	GB498235(A)	申请公布日期	1939.01.05
申请号	GB19370018889	申请日期	1937.07.07
申请人	KARL HERMAN FRANZ SCHLEGEL	发明人
分类号	H03G7/02	主分类号	H03G7/02
代理机构		代理人
主权项
地址

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