BT&D

APPARATUS AND INSTRUMENTS FOR OPTICAL TRANSMISSION; NAMELY, LASERS AND LIGHT EMITTING DIODES, PHOTO-DETECTORS, OPTICAL TRANSMITTERS, OPTICAL RECEIVERS, OPTICAL GENERATORS, OPTICAL SWITCHES, OPTICAL AMPLIFIERS, OPTICAL MODULATORS, OPTICAL COUPLERS, OPTICAL CABLES, OPTICAL WAVEGUIDES; CONTROL CIRCUITRY; COMPUTERS; MICROPROCESSORS; [ OPTICAL, TAPES AND CARDS ] * OPTICAL DATA CARRIER IN THE FORM OF DISCS AND TAPES * ; ENCODED COMPUTER PROGRAMS FOR OPTICAL DATA TRANSMISSION; AND CABLES FOR ELECTRICAL OR OPTICAL SIGNAL TRANSMISSION, TAPES

PAPER, DATA CARRIERS IN THE FORM OF CARDS AND CARDS, FOR THE RECORDAL OF COMPUTER PROGRAMS AND FOR THE RECORDAL OF DATA; BOOKS, INSTRUCTION MANUALS AND TEACHING LITERATURE OR AIDS