KR0159906B1
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Game telephone
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KR0129589B1
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Vcr recording control apparatus using a beeper
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KR0136354B1
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Pager
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KR950001550B1
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Inquiring apparatus in the telephone
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KR950001522B1
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Coreless phone
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KR950007979B1
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A long distance dialing controlling system
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KR940005034B1
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Bus terminal auto-broadcasting device
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KR950003321B1
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Data tranceiving system in cordless phone
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KR950002755B1
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Permanent off-hook preventing system
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KR950000975B1
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Battery-discharging prevention method on power failure
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KR940009771B1
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Automatic selecting device for the modem of a cordless-phone
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KR940008111B1
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Cordless switching system
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KR940004463B1
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Digital singal to bipolar signal converter
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KR920008756B1
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Device of preventing hook-off
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