An economic-commercial system to increase sales and commercial advertising, which essentially consists of having, inside containers containing liquid products and during the filling phase, one or several pieces of insoluble and unchangeable solid material, provided with certain brands , whose pieces, thanks to the marks that appear in them, will reward the buyer directly with the corresponding to the mark that appears in the piece or through a certain number of them. (Machine-translation by Google Translate, not legally binding)
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