9 [ Scientific, electrical, photographic, optical, weighing, measuring, signaling, checking and teaching apparatus and instruments for use in rapid prototyping, in particular, for use in laser sintering systems, namely, sintering lasers and lasers for measuring purposes, memory cards, pre-recorded CDs, DVDs, magneto-optical discs, magnetic computer tapes, hard computer discs, changeable hard computer discs and floppy computer discs, featuring digitized data for product designs or physical objects such as human bodies or their parts, buildings, structures, geographical and geological objects, industrial machine parts, electronic components, automotive parts, consumer goods, and other kinds of models, molds and tools; data processing equipment, namely, computers and data transmission and reception equipment, namely, computer disc drives and CD-ROM writers; computer network components, namely, computer network hubs, switches and routers; data processing programs, namely, computer software for designing machine parts and support structures for use in the field of rapid prototyping, tooling and manufacturing of plastic, metal, ceramic, and sand-based three-dimensional models and series of industrial machine parts, electronic components, human skeletal components, automotive parts, consumer goods, and other kinds of models, molds and tools and parts ]