Scientific apparatus and instruments for the demonstration, explanation and teaching of mechanics, electrics, electronics, thermodynamics, optics, atomic and nuclear physics, solid state physics, medical, chemical and biological processes as well as computer assisted experiments, namely, glass demonstration tubes and training tubes, namely, cathode ray tubes, diodes, triodes, gas triodes, diffraction tubes, e/m tubes, Maltese Cross tubes, critical potential tubes, fine beam tubes, luminescenc...

PERSONAL COMMUNICATION EQUIPMENT - NAMELY TELEPHONES, TELEPHONE RECEIVING STATIONS

ELECTROMECHANICAL INSTRUMENTS-NAMELY, DIGITAL READOUT CLOCKS AND ALPHA NUMERICAL READOUTS OF THE FOLLOWING TYPES: ALPHA NUMERIC DIGITAL INDICATORS, TELECOMMUNICATION INDICATOR BOARDS, SCORE BOARDS FOR SPORT AND INDUSTRY, TIMETABLE BOARDS FOR TRANSPORTATION INDUSTRY, NAMELY, BUS, RAIL, AND AIRPORT TERMINALS, STOCK QUOTATION BOARDS, PAGING BOARDS, FLIGHT PRODUCTION AND STATISTICAL BOARDS

INSTALLATION AND MAINTENANCE SERVICES IN THE FIELD OF MOBILE AND FIXED RADIO COMMUNICATION SYSTEMS, TELEVISION AND RADIO TRANSMISSION AND RECEIVING ANTENNA SYSTEMS AND CATV SYSTEMS