1
Michael C G Lee, Arlan J Anderson, Michael J Craven, Henry C Mok: Portable wireless communication device having an extendible section. Nortel Networks, Dennis R Haszko, Smart & Biggar, June 5, 2001: US06243595 (42 worldwide citation)

A portable cellular telephone comprising a main body for housing at least a microcontroller, a display screen, an audio receiver and a microphone. An extendible section that houses a number of function keys such as the standard telephone keys, slides out of the main body to expose the display screen ...


2
John G Hogeboom, Terry N Thomas, Dennis A Yarak, Arlan J Anderson: Adaptive equalizer. Northern Telecom, Schwartz Jeffery Schwaab Mack Blumenthal & Evans, March 17, 1987: US04650930 (14 worldwide citation)

High-speed bipolar signals transmitted along standard twisted pair telephone wiring are subject to InterSymbol Interference which is corrected by an equalizer circuit that is operably responsive to predetermined parameters of bipolar signals detected at the secondary of a line transformer. These par ...