A handheld computing device (10) having voice input and voice output includes a handheld unit (20) having a processor (11) and a display (18) communicating with the processor (11), a handset (30) including means for voice input (43) and means for voice output (42), a mechanism (39, 41) for docking the...http://www.google.de/patents/US6952617?utm_source=gb-gplus-sharePatent US6952617 - Handheld computer with detachable handset
