김경용 주윤돈 정형진 김왕섭 2024-01-12T05:33:38Z 2024-01-12T05:33:38Z 1995-08-29 https://pubs.kist.re.kr/handle/201004/78656 광대역　전파흡수체 Patent 1995-08-29 1994-04-11 5,446,459 08/225,754 US 특허 한국과학기술연구원