A portable telephone set includes a case having first and second sides opposite to each other, a group of keys is located on the first side of the case, and a card loading mechanism. The case includes first and second portions located on the second side. The first portion can accommodate a battery pack,...http://www.google.com/patents/US7925301?utm_source=gb-gplus-sharePatent US7925301 - Portable telephone set with a card inserted through a battery holding space
