Luminous, economic device for commercial propaganda. (Machine-translation by Google Translate, not legally binding)

摘要

A luminous, economic device for commercial propaganda, consisting of a device composed of two pieces of hard cardboard, 3 mm thick, approximately in a right triangle with one of its vertices cut and lengthened by the other acute angle until making a characteristic peak or hook, both pieces joined by the long side of the right angle by a tape of rubberized cloth, and with the internal faces lined with silver paper, of another piece, of the same material, in the form of a rod with two grooves that enter on the aforementioned hooks; of two other pieces, also cardboard joined with the gummed cloth that form a frame, with their corresponding grooves; of another piece, changeable, of colored cardboard, in which it is drawn, lithographed or made by any other procedure, the label or legend, in negative, with the letters treated with vegetable oil for its greater transparency; and an electric, portable lamp, which serves as a focus. (Machine-translation by Google Translate, not legally binding)