(under subclass 15.1) A book including a cover which can be releasably secured to and placed around the book, the body of the book having some modification necessitated by the particular cover associated with the book.
(1) Note. In each patent in this and the indented subclass
there is involved some modification of the body of the book, made necessary by the particular cover associated with it. A removable cover which does not necessitate any modification of the body of a book is classified in this class, subclass 34.
