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PL307921A1
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Branching line adapter for a computer-aided fire protection system
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PL307923A1
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Fire alarm box address odentifier
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PL307922A1
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Method of and system for controlling fire extinguishing operations effected by a computer-aided fire protection system
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PL301983A1
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Method of setting a micro controller incorporating tv set into service mode of operation
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PL295342A2
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Wireless system for reception of colour tv set sound locally through earphone
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PL273103A2
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Control system of a specialized multiplane pneumatic press for shaping and gluening box bodies,especially housings for teletechnical equipment
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PL273102A2
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Electronic device encasing in particular for a tv set high frequency head
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PL243349A2
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" 10/11" frequency counter
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PL242062A1
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Synchronized frequency divider in band from 200 mhz up to 400 mhz
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PL242063A1
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Synchronized frequency divider in band from 50 mhz up to 250 mhz
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PL241220A1
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Method of modulation of electric signals
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PL231913A1
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Method of tuning of audio beat frequency suppressor in intermediate frequency units in tv receivers
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PL231912A1
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Apparatus for testing of insulation strength,especially in tv receivers
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DE2459687A1
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SWITCHING OF AN AUTOMATIC TELEGRAPH SIGNAL BUTTON, IN PARTICULAR FOR GENERATING ALARM AND EMERGENCY SIGNALS AT SEA
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