The U.S. Patent and Trademark Office has granted Apple a patent on push-to-talk technology. It describes a method to provide push-to-talk from one user to another in a wireless packet data telecommunications network. Apple Insider tells us that's one in 26 that the patent officer granted Apple this week. Another was a double-sided touch-sensitive panel that could possibly appear in future iPhones or glass. Picture a glass wall separating two rooms. Read thee article here.