Internally integrated, high resolution, analog resistive touchscreen overlay and controller system that replaces the sheet glass that is installed on the display when purchased from Apple.
Check out this chart that shows Apple's quarterly sales by product. Sixty percent of Apple's sales are from products that did not exist three years ago
After its questionable decision to reject Apple's 'iPad mini' trademark filing, the USPTO has withdrawn its refusals asking only that the company attach a disclaimer on the word 'mini'.