백영준 박영준 2024-01-12T06:00:54Z 2024-01-12T06:00:54Z 2001-10-23 https://pubs.kist.re.kr/handle/201004/79129 초점이　형성된　레이저를　이용한　굽은경질　표면의　평탄화　방법 Patent 2001-10-23 1999-05-01 313703 99-15822 KO 특허 한국과학기술연구원