U.S. federal trademark · Serial No. 76689857 · Reg. No. 3814863
Downloadable software for changing a personal digital assistant (PDA) and ultra mobile personal computer (UMPC) into a half duplex two way radio, namely, an Internet walkie-talkie allowing users to talk directly one-to-one or one-to-many, using IP data
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.