73830267
Oct 10, 1989
Aug 13, 1991
COMPUTER PROGRAMS FOR ELECTRONIC MAIL COMMUNICATION BETWEEN MAIN FRAME COMPUTERS, BETWEEN MINI COMPUTERS, BETWEEN MAIN FRAME AND MINI COMPUTERS, BETWEEN MAIN FRAME AND PERSONAL COMPUTERS, BETWEEN PERSONAL COMPUTERS THROUGH MAIN FRAME COMPUTERS, AND BETWEEN PERSONAL COMPUTERS THROUGH LOCAL AREA NETWORKS
Electrical and Scientific Apparatus