Apple Tablet Computer Design Patent
Many readers note that Apple was granted a US patent on "the ornamental design for an electronic device, substantially as shown and described". The US patent was filed on March 17th 2004 and posted today (May 10th, 2005).
Of interest, this is not the first time Apple has worked on a tablet based computer. An early prototype Newton is pictured here (Messageslate) as well as a tablet-based PowerBook prototype pictured here.