김태형 박완철 2024-01-12T18:33:04Z 2024-01-12T18:33:04Z 1994-09-02 https://pubs.kist.re.kr/handle/201004/93767 고효율의　호기성　축산　정화조 Patent 1994-09-02 1992-05-20 0076955 1992-0008522 KO 특허 한국과학기술연구원