Granted Patent
Utility
US 5,689,504 · App. 08/572,062
Mobile radio communication system and channel control method therefor
Inventor:
Tadao Hashimoto
Patented Case
View Patent ↗
Granted: Nov 18, 1997
Filed: Dec 14, 1995
Inventor
Tadao Hashimoto
Assignee (at issue)
NEC CORPORATION
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.