Granted Patent
Utility
US 6,314,274 · App. 09/164,904
Portable radio having retractable keys, wherein the keys retract within the housing upon movement of a retraction accuator
Inventor:
Keiichiro Kumagai
Patented Case
View Patent ↗
Granted: Nov 6, 2001
Filed: Oct 1, 1998
Inventor
Keiichiro Kumagai
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.