Well, we haven’t had a good Apple Tablet rumor in, oh, almost 3 days or so, so here’s one that might be fun to follow. An Apple patent application apparently is revealing a transparent multi-touch display that can work as a control surface on either side. Open it up in traditional laptop mode and you have a keyboard. Close it and you have a touch enabled slate, or so it would seem. Trendhunter Magazine is calling it the Holy Grail of Tablet Computing.