73717413
Apr 26, 1988
Oct 31, 1989
ELECTRONIC INTERFACE APPLIANCE FOR CONNECTING A COMPUTER OR OTHER ELECTRONIC PRODUCT TO A SECOND COMPUTER OR ELECTRONIC PRODUCT USING AC POWER LINES, CO-AXIAL CABLE, TWISTED PAIR CABLE INFRA-RED OR RADIO WAVES, OR FIBRE OPTIC TRANSMISSION MEDIA
Electrical and Scientific Apparatus