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Inventors
Kim Soojung, 노준석, Sunghoon Hong, 정충환, 고병수, Doa Kim, 장재혁
Application No.
18/112283 (2023.02.21)
Publication No.
US2023/0281416 A1 (2023.09.07)
Registration No.
12380305 (2025.08.05)
Country
UNITED STATES
KSP Keywords
security code
Family
 
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Status Patent Country KIPRIS
Registered 다층 구조의 QR코드 KOREA