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Method, system, and recording medium for notifying reception of message |
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Method and system for transmitting text messages |
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2019-10-29 |
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Method, system, and recording medium for providing message based on group unit |
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2019-07-02 |
| 10298529 |
Method, system, and recording medium for managing group message |
YungSeong Lee, Dohoon Kim, Jeong Hwa Kim, Hyo Jung Kim, Sun Young Park +10 more |
2019-05-21 |