A wireless communication system (10) includes a system controller (22), at least one radio frequency transmitter (26), at least one radio frequency receiver (28), at least one transmit antenna (30), at least one receive antenna (40), a chat server (48) and a plurality of wireless communication devices...http://www.google.fr/patents/US20020016163?utm_source=gb-gplus-shareBrevet US20020016163 - Chat server and wireless chat device
Numéro de demande: 09/963,973 Numéro de publication: US 2002/0016163 A1 Date de dépôt: 26 sept. 2001 Brevet délivré: US6459892 ( Date de délivrance 1 oct. 2002)
