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US3654394A
(en)
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Field effect transistor switch, particularly for multiplexing
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US3251036A
(en)
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Electrical crossbar switching matrix having gate electrode controlled rectifier cross points
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GB963319A
(en)
|
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Electronic switching telephone system
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SE421355B
(sv)
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Digital databehandlingsanordning speciellt for jernvegssekerhetssystem
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SE181765C1
(index.php)
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US3305707A
(en)
|
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Transistor bias circuits
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US3368200A
(en)
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Signal switching apparatus with interlock circuitry
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US2976520A
(en)
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Matrix selecting network
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US3221107A
(en)
|
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Pbx-group hunting for electronic switching systems
|
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US2880331A
(en)
|
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Time controlled signal discriminator circuit
|
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US4000375A
(en)
|
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Automatic call transfer circuit for a plurality of telephones
|
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US2951951A
(en)
|
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Electric gating and the like
|
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US2935735A
(en)
|
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Magnetic control systems
|
|
SE457999B
(sv)
|
|
Personsoekarmottagare
|
|
US3719832A
(en)
|
|
Time division multiplexer using charge storage diode line circuits
|
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USRE25139E
(en)
|
|
faulkner |
|
US3182204A
(en)
|
|
Tunnel diode logic circuit
|
|
US3063016A
(en)
|
|
Binary counting circuits
|
|
US2810098A
(en)
|
|
High-speed hunting circuits
|
|
US3789147A
(en)
|
|
Telephone exchange equipment condition change detecting apparatus
|
|
US2724743A
(en)
|
|
Electronic register translators
|
|
GB1013483A
(en)
|
|
Improvements in or relating to communication systems
|
|
US3927365A
(en)
|
|
Switch operating device
|
|
GB1113234A
(en)
|
|
Improvements relating to automatic telecommunication switching systems
|
|
US3309535A
(en)
|
|
Switching circuitry for semiconductive controlled rectifiers
|