2G-6G PUF-RiSTOR

#Other signs, notations or symbols, º (temp), #, bar codes #Quadrilaterals with dark surfaces or parts of surfaces #Quadrilaterals containing one or more letters #Quadrilaterals containing one or more numerals #Numerals in light-coloured characters on a dark background #Numerals juxtaposed or joined to a letter or a figurative element #Numerals presenting a special form of writing #Letters linked to a figurative element #Letters in light-coloured characters on a dark background #Letters in heavy characters #Series of letters separated from one another other than by a single space #Series of letters in different dimensions #Series of letters presenting different forms of writing