Granted Patent
Utility
US 6,094,586 · App. 09/285,050
Portable radio telephone set
Inventors:
Takanori Nishiyama, Kazunori Yanagisawa, Sakae Itakura
Patented Case
View Patent ↗
Granted: Jul 25, 2000
Filed: Apr 2, 1999
Inventors
Takanori Nishiyama
Kazunori Yanagisawa
Sakae Itakura
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.