A portable cellular phone system is provided, wherein matched sets of algorithmically generated communication units are generated, each defining an increment of authorized communication. One set is stored on a system server, i.e. a service provider, and the pre-paid set is available for use within a...http://www.google.fr/patents/US20080057935?utm_source=gb-gplus-shareBrevet US20080057935 - PORTABLE CELLULAR PHONE SYSTEM HAVING AUTOMATIC INITIALIZATION
PORTABLE CELLULAR PHONE SYSTEM HAVING AUTOMATIC INITIALIZATION
Numéro de demande: 11/852,887 Numéro de publication: US 2008/0057935 A1 Date de dépôt: 10 sept. 2007 Brevet délivré: US7711359 ( Date de délivrance 4 mai 2010)
