发明授权
US3424858A Line communications system including an electric amplifier composed of similar transistors
失效
线路通信系统,包括由类似晶体管组成的电放大器
- 专利标题: Line communications system including an electric amplifier composed of similar transistors
- 专利标题(中): 线路通信系统,包括由类似晶体管组成的电放大器
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申请号: US3424858D申请日: 1965-03-01
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公开(公告)号: US3424858A公开(公告)日: 1969-01-28
- 发明人: PFYFFER HANS KARL , WHITBREAD JOHN RAYMOND
- 申请人: GEN ELECTRIC CO LTD
- 专利权人: Gen Electric Co Ltd
- 当前专利权人: Gen Electric Co Ltd
- 优先权: GB840964 1964-02-28
- 主分类号: H03F3/21
- IPC分类号: H03F3/21 ; H03F3/42 ; H04B3/44 ; H04B3/38 ; H04B3/58
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