Scope note: This class comprises all appellations specific to intellectual products or standardized patterns. This class comprises appellations that are by their form or syntax specific to identifying instances of E28 Conceptual Object, such as intellectual products, standardized patterns etc. Examples: - "ISBN 3-7913-1418-1" - "ISO 2788-1986 (F)" - "DOI=10.1109/MIS.2007.103" In First Order Logic: E75(x) ⊃ E41(x)