|Roger Fidler with the iPad and his tablet|
Samsung, who is in patent infringement litigation with Apple, is claiming that since Filbert's tablet was in the public domain in 1994 Apple can't have patented the idea. However, before we all rush off and call Steve Jobs a conman and a plagiarist, we should appreciate that Fidler's tablet was only an idea, he never built them.
|Alan Kay with the Dynabook|
(skip in about 4 mins to see the tablet)