73452797
Nov 14, 1983
Aug 20, 1985
RADIO/TELEPHONE TRANSMITTERS, RECEIVERS AND INTERFACERS NECESSARY TO PROVIDE TWO-WAY TELEPHONE CALLS TO AND FROM RAILWAY TRAINS
Electrical and Scientific ApparatusCOMMUNICATIONS SERVICES, NAMELY PROVIDING A NETWORK FOR TELEPHONE COMMUNICATIONS FOR USE ON RAILWAY TRAINS
Telecommunications