Granted Patent
Utility
US 6,567,384 · App. 09/434,486
Portable radio unit for use in mobile telephone system and control method thereof
Inventor:
Atsushi Shimbo
Patented Case
View Patent ↗
Granted: May 20, 2003
Filed: Nov 5, 1999
Inventor
Atsushi Shimbo
Assignee (at issue)
OKI ELECTRIC INDUSTRY CO., LTD.
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.