Scientific and optical apparatus and instruments; data processing equipment and computers; magnetic data carriers; apparatus for transmission or reproduction of sound or images; recording discs

Instructional and teaching material (except apparatus); paper, cardboard, and goods made from these materials, not included in other classes; office requisites (except furniture); plastic materials for packaging not included in other classes

Scientific and optical apparatus and instruments, data processing equipment and computers; magnetic data carriers; apparatus for transmission or reproduction of sound or images; recording discs

Instructional and teaching material (except apparatus); paper, cardboard, and goods made from these materials, not included in other classes; office requisites (except furniture); plastic material for packaging not included in other classes