한동근 김영하 2024-01-12T16:02:03Z 2024-01-12T16:02:03Z 1993-06-22 https://pubs.kist.re.kr/handle/201004/90875 성형가능한　정형외과　지지대용　고분자재료 Patent 1993-06-22 1990-11-26 0062936 1990-0019205 KO 특허 한국과학기술연구원