990Blackbourn IncCassette album with channel-form hinges and methodUS5145068 *Sep 20, 1990Sep 8, 1992Blackbourn Inc.Cassette album with channel-form hinges and methodUS5156271 *Oct 31, 1991Oct 20, 1992Toner Robert CTapes to convert dust cover jackets to the aesthetic appearance of booksUS5158176 *Aug 21, 1990Oct 27, 1992Wolf Hans JPackaging for data - or recording medium, such as magnetic tapes or