Granted Patent
Utility
US 6,256,501 · App. 09/107,124
Cellular mobile telecommunications system for controlling a hand-off by a mobile station
Inventors:
Katsumi Tokuyama, Katsutoshi Itoh
Patented Case
View Patent ↗
Granted: Jul 3, 2001
Filed: Jun 30, 1998
Inventors
Katsumi Tokuyama
Katsutoshi Itoh
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.