42 1 10 dec 1981 The Office of Patents Administration, Republic of Korea Editor mixed material Korea The Office of Patents Administration, Republic of Korea 1981 WhatsApp_Image_2025-09-30_at_15.24.15.jpeg.jpeg nov 1981 The Office of Patents Administration, Republic of Korea Editor mixed material Korea The Office of Patents Administration, Republic of Korea 1981 WhatsApp_Image_2025-09-30_at_15.23.53.jpeg.jpeg sep. 1979 The Office of Patents Administration Republic of Korea Primary Author mixed material Seoul Korea The Office of Patents Administration The Republic of Korea 1979 WhatsApp_Image_2025-09-30_at_10.10.34.jpeg.jpeg november 1985 The Office of Patents Administration Republic of Korea Primary Author mixed material Seoul Korea The Office of Patents Administration The Republic of Korea 1985 WhatsApp_Image_2025-09-25_at_09.55.17_%281%29.jpeg.jpeg nov. 1979 The Office of Patents Administration Republic of Korea Primary Author mixed material Seoul Korea The Office of Patents Administration The Republic of Korea 1979 WhatsApp_Image_2025-09-25_at_09.55.17.jpeg.jpeg des. 1979 The Office of Patents Administration Republic of Korea Primary Author mixed material Seoul Korea The Office of Patents Administration The Republic of Korea 1979 WhatsApp_Image_2025-09-25_at_09.55.16_%281%29.jpeg.jpeg oct. 1979 The Office of Patents Administration Republic of Korea Primary Author mixed material Seoul Korea The Office of Patents Administration The Republic of Korea 1979 WhatsApp_Image_2025-09-25_at_09.55.16.jpeg.jpeg nov.1984 The Office of Patents Administration Republic of Korea Primary Author mixed material Seoul Korea The Office of Patents Administration Republic of Korea 1984 WhatsApp_Image_2025-09-23_at_15.07.09_%283%29.jpeg.jpeg nov.1984 The Office of Patents Administration Republic of Korea Primary Author mixed material Seoul Korea The Office of Patents Administration Republic of Korea 1984 WhatsApp_Image_2025-09-23_at_15.07.09_%282%29.jpeg.jpeg december 1984 The Office of Patents Administration Republic of Korea Primary Author mixed material Seoul Korea The Office of Patents Administration Republic of Korea 1984 WhatsApp_Image_2025-09-23_at_15.07.09_%281%29.jpeg.jpeg