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KR20130079465A
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Online collecting system for collecting of credit card sales slip which is signed by the client
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KR101184328B1
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Remote control broadcasting apparatus with enhanced security
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KR101131397B1
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A self-generation outdoor burner
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Automatic recognition and automatic storage device for id card
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KR20100103103A
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The public address preventing howling of a monitoring speaker
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KR20100103035A
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The public address for effector
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KR20100103105A
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The speaker controlling output of power
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KR20100103101A
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The public address preventing speaker being broken in speaker being started
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The public address with the way inserting a disital amp in small quantity
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KR20100103104A
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The public address for broadcast with an electronic dimmer
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KR20100103102A
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The public address with a altering install in power amp within the section
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KR20100102813A
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The preamp mixing audio
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KR20100102780A
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The public address for broadcast controlling howling
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KR100908564B1
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The public address for broadcast controlling mike filtering
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