76172819
Nov 27, 2000
Jun 1, 2004
COMMUNICATIONS EQUIPMENT, NAMELY, COMMUNICATION SYSTEMS HAVING RADIOS, DESK CONSOLES, INTERFACES, WIRELESS UNITS, MASTER CONTROLS AND PARTS THEREOF FOR USE WHERE ENERGY TRANSMISSION IS LIMITED BY NATURAL AND/OR MAN-MADE BARRIERS SUCH AS ROCKS AND/OR STEEL-REINFORCED WALLS AND/OR WHERE THE TRANSMISSION ENERGY IS LIMITED BY SAFETY CONSIDERATIONS SUCH AS IGNITION AVOIDANCE OF METHANE IN COAL MINES
Electrical and Scientific Apparatus