Inventor

EARDLEY RICHARD A

GB3 patents

Patents

3 patents

US5543589AAug 6, 1996

Touchpad with dual sensor that simplifies scanning

IBM220 citations93

US5521336AMay 28, 1996

Simplified digital pad sensor

IBM102 citations91

US4920237AApr 24, 1990

Membrane keyboards

IBM9 citations63