A case for recording media used for binding or fastening a recording medium, such as a compact disc, in a book, for example, weekly or monthly magazines, and comprising a board, a film adhered thereto to form a casing space into which a disc is put, the case being bound or fastened in the book with both...http://www.google.com/patents/US5881870?utm_source=gb-gplus-sharePatent US5881870 - Case for casing recording media
