오윤서군이특허출원중인아이디어는신발에관련된발면특허아이디어로신체의성장이빠른어린학생들이신발을조금씩큰사이즈로사서신는것을보고신발이발에비해조금큰경우간편히사용할수있는신발사이즈조절기능이다.                   

                                                                                                     특허

    (사진제공:옥윤선발명디자인그룹)