Granted Patent
Utility
US 6,381,471 · App. 09/343,910
Dual band radio telephone with dedicated receive and transmit antennas
Inventor:
Vladimir Dvorkin
Patented Case
View Patent ↗
Granted: Apr 30, 2002
Filed: Jun 30, 1999
Inventor
Vladimir Dvorkin
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.