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(en)
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Solid state relay circuit
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Matningsanordning for en linjekrets
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Commutated motor including commutation means responsive to reactive voltage induced in armature windings
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Selecting system
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Effektbrytaranordning
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Universal signal generator for generating telephone system high level signals
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Atergivningsanordning innefattande en matris av gasurladdningsatergivningselement
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Selective system
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Selective system
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Improvements in or relating to switching systems particularly for automatic telephones
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Control and holding circuit for relay matrices
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Magnetic switching device
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Switch operating device
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Electrical selector circuit arrangements
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Status detector and memory arrangement
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Capacitor-transformer voltage equalization network for series connected transistor switches
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SE176742C1
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Transistor-core pulse generator
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Protective means for mercury arc devices
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Telephone-exchange apparatus.
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