(under subclass 137) Device including one or more sheets or panels folded or joined to form at least a partial jacket for one or more books or sheets of paper.
SEE OR SEARCH CLASS
206, Special Receptacle or Package,
232, for a combined or convertible receptacle or package for a book or leaflet; subclasses 449+ for a special container or package for a book or sheet; and subclasses 472 for a book cover having an attached article retainer (no handle claimed).