Granted Patent
Utility
US 6,141,335 · App. 08/985,484
Radio communication system
Inventors:
Mikio Kuwahara, Seishi Hanaoka, Nobukazu Doi, Takaki Uta
Patented Case
View Patent ↗
Granted: Oct 31, 2000
Filed: Dec 4, 1997
Inventors
Mikio Kuwahara
Seishi Hanaoka
Nobukazu Doi
Takaki Uta
Assignee (at issue)
HITACHI, 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.