조병원 윤경석 2024-01-12T08:09:25Z 2024-01-12T08:09:25Z 1990-09-11 https://pubs.kist.re.kr/handle/201004/81823 다단회전　원판전극　및　고체　고분자　전해질　전극형　전해조 Patent 1990-09-11 1990-01-04 4,956,067 07/460,986 US 특허 한국과학기술연구원