İSTANBUL AYDIN ÜNİVERSİTESİ ISTANBUL UNIVERSITY 2003

#Signs, notations, symbols #Surfaces or backgrounds covered with repeated geometrical figures, figurative elements or inscriptions #Circles #Quadrilaterals #Letters or numerals forming geometrical figures, written or typographical matter in perspective #Letters presenting a special form of writing #Numerals presenting a special form of writing #Colours #Dots #Surfaces or backgrounds covered with hatching #More than two circles, inside one another, spirals #Circles containing one or more quadrilaterals (specify the content) #Circles containing one or more letters #Circles with dark surfaces or parts of surfaces #Squares #Rhombs or squares standing on one of the corners thereof #Letters or numerals forming a figure in the shape of an arc of a circle #Series of letters presenting different forms of writing #Series of letters in different dimensions #Letters in light-coloured characters on a dark background #Numerals in light-coloured characters on a dark background #Three predominant colours