Granted Patent
Utility
US 5,493,698 · App. 08/202,217
Radio apparatus for simulataneously transmitting and receiving signals using a simple frequency
Inventors:
Osamu Suzuki, Kazuo Suzuka, Mitsuo Shiraishi, Sakari Ohira, Fujio Sumi, Kenichi Suzuki
Patented Case
View Patent ↗
Granted: Feb 20, 1996
Filed: Feb 25, 1994
Inventors
Osamu Suzuki
Kazuo Suzuka
Mitsuo Shiraishi
Sakari Ohira
Fujio Sumi
Kenichi Suzuki
Assignees (at issue)
Hitachi Denshi Kabushiki Kaisha
TOHOKU ELECTRIC POWER COMPANY, INC.
Fuji-Tekku Kabushiki Kaisha
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.