text: Patent US7869800 - Portable cellular phone system having automatic initialization - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA 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.com/patents/US7869800?utm_source=gb-gplus-sharePatent US7869800 - Portable cellular phone system having automatic initializationAdvanced Patent SearchPublication numberUS7869800 B2Publication typeGrantApplication numberUS 12/772,795Publication dateJan 11, 2011Filing dateMay 3, 2010Priority dateOct 2, 1998Fee statusPaidAlso published asUS7274928, US7711359, US20050170818, US20080057935, US20100210264Publication number12772795, 772795, US 7869800 B2, US 7869800B2, US-B2-7869800, US7869800 B2, US7869800B2InventorsEran Netanel, Alon SegalOriginal AssigneeTelespree CommunicationsExport CitationBiBTeX, EndNote, RefManPatent Citations (164), Non-Patent Citations (6), Referenced by (3), Classifications (26), Legal Events (5) External Links: USPTO, USPTO Assignment, EspacenetPortable cellular phone system having automatic initialization
  R. Osmani, and M. Metroka, Disposable Wireless Communication Device Adapted to Prevent Fraud, U.S. Pat. No. 5,815,807 (29 Sep. 1998) disclose "A disposable portable radiotelephone subscriber unit comprises a power supply, a transceiver and a controller. The power supply has stored therein a predetermined measure of power capacity. The transceiver is permitted to operate for a predetermined period of time responsive to the predetermined measure of the power capacity. The controller monitors a rate of depletion of the predetermined measure of the power capacity. The controller permits operation of the transceiver when the power capacity is bein