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KR20120057735A
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Touch Screen Type Keyboard of Smartphone and Computer Keyboard that Easy Changing among Korean, English and Other Characters
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An usb male plug and its female plug(receptacle) not depending on up and down positions
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Notebook computer with a built-in power supply or a attachable power supply adapter
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Korean alphabets keyboards for qwerty keyboards of smart-phones including convenient tapping method of vowel keys
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Korean alphabets arrangement of unified keypad with selectable input modes for mobile devices
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Speaker System for reproducing very low frequency and ultra high frequency well in television
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System for network-based investigation and statistics service using a e-mail board
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System for network-based electronic commerce service using a atypical trading pattern
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System for forming database using a providing free goods
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System for network-based managing service of literary works
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System for network-based multi-level writing service
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System for network-based trading of translation service
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System for network-based investment and trading service of real estate
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Fund agent system for network-based
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