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KR20020006267A
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Network connecting system and its method using numbers
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KR20010047975A
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A System and Terminal of Multimedia with Multi-Used
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A System And Processing Methode of Finance by Online
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A Online System And Methode of Publishing for A Official Letter
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KR20010037191A
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A Online Teaching System
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A Database System Using IP Phone
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KR20010026231A
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A Operating System And Methode of Cyber Lottery Ticket
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A System of Direct Trading
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A Ticketing System
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KR20010019151A
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A System of IP Phone
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KR20010019158A
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A Methode of Operation for Public Used E-Mail Phone
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KR20010019150A
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A Video Phone for Public Use
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