|
EP1128557A2
(en)
|
|
Switching circuit for generating pulsed power
|
|
US2607891A
(en)
|
|
Translating circuits utilizing glow discharge devices
|
|
US2628277A
(en)
|
|
Relay type selecting circuit arrangement
|
|
SE181840C1
(OSRAM)
|
|
|
|
US2291036A
(en)
|
|
Selecting system
|
|
GB922810A
(en)
|
|
Access arrangement for memory array
|
|
US2294457A
(en)
|
|
Selective system
|
|
GB2053620A
(en)
|
|
Generation and distribution of signals eg ringing to telephone subscribers
|
|
GB550210A
(en)
|
|
Improvements in or relating to switching systems particularly for automatic telephones
|
|
GB1003773A
(en)
|
|
Improvements in or relating to switching networks
|
|
US3329831A
(en)
|
|
Electronic ring circuit comprising plurality of first and second switching means driven by overlapping a.c. waveforms
|
|
GB938477A
(en)
|
|
Improvements in or relating to magnetic core memory circuits
|
|
US3927365A
(en)
|
|
Switch operating device
|
|
US3085162A
(en)
|
|
Electrical selector circuit arrangements
|
|
US3772663A
(en)
|
|
Status detector and memory arrangement
|
|
US3574412A
(en)
|
|
Capacitor-transformer voltage equalization network for series connected transistor switches
|
|
JPS5880957A
(ja)
|
|
通信装置におけるル−プ電流基準値の検出方法
|
|
SE190783C1
(OSRAM)
|
|
|
|
US3021484A
(en)
|
|
Plural gated pulse generators controlled by common feedback path
|
|
SE176742C1
(OSRAM)
|
|
|
|
US2015041A
(en)
|
|
Protective means for mercury arc devices
|
|
US1127889A
(en)
|
|
Telephone-exchange apparatus.
|
|
US1374192A
(en)
|
|
Amos p |
|
US1070945A
(en)
|
|
Controlling system for receiving apparatus.
|
|
US932505A
(en)
|
|
Electrical signaling system.
|