Back to Search
Dossier
영어 학습 시스템
InventionPending
§ Ⅰ
Dossier Overview
Inventor
이광식
Filing Date
Jun 24, 2024
Publication Date
Dec 31, 2025
IPC Classification
G9B 19/6G6Q 50/20G9B 5/2G9B 7/6
CPC Classification
G9B19/6G6Q50/20G9B5/2G9B7/6
External Resources