Isn't this patent about those dang things we used to hang off our belts 30 years ago? You know, someone calls you, their number shows up on a tiny screen, then you scrambled to look for a phone, any phone (landline only) and called them back. What were they called? Beepers, bleepers, pagers? I thought pagers only existed in airports, those announcements "Will Mr So & So please... the rest is incoherent... "
Don't patents become obsolete?