Granted Patent
Utility
US 6,836,656 · App. 09/833,568
Portable telephone
Inventors:
Kazuaki Nakae, Makoto Kato
Patented Case
View Patent ↗
Granted: Dec 28, 2004
Filed: Apr 13, 2001
Inventors
Kazuaki Nakae
Makoto Kato
Assignee (at issue)
SANYO ELECTRIC 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.