Granted Patent
Utility
US 6,580,928 · App. 09/521,543
Handy phone
Inventor:
Eriko Aoki
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: Mar 9, 2000
Inventor
Eriko Aoki
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.