Flat bank multiple for selectors in telephone exchanges

• 1. 固定式、半固定式中倍数泡沫灭火器 [P] . 中国专利： CN1038408A . 1990-01-03
• 2. 一种固定式中倍数泡沫产生器 [P] . 中国专利： CN202637778U . 2013.01.02
• 3. Multiple to banks of the selectors flat telephone installations [P] . 法国专利： FR737233A . 1932-12-08

  机译： 多个选择器平板电话装置

• 4. Flat bank multiple for selectors in telephone installations [P] . 英国专利： GB383893A . 1932-11-24

  机译： 用于电话安装中选择器的固定存储单元倍数

• 5. Working voltage monitor for selector banks in telephone exchange - assigns comparator to each voltage with outputs switched together for unit able to produce alarm signal [P] . 德国专利： DE3939408A1 . 1991-06-06

  机译： 电话交换机中选择器组的工作电压监控器-将比较器分配给每个电压，并且将输出切换在一起以产生报警信号的单元

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• 7. Apparatus Tvu-12 for the Time Multiplexing of City Telephone Exchange Cables by Telegraph Channels [R] . 1970

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• 3. Chiral ionic liquids as chiral selectors for separation of tryptophan enantiomers by ligand exchange chromatography [J] . 杨艳霞 ,李静 ,蒋新宇 . 中南大学学报 . 2013,第005期
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