Granted Patent
Utility
US 6,531,986 · App. 09/834,369
Retractable/extendable antenna for portable radio device
Inventor:
Tetsuya Saito
Patented Case
View Patent ↗
Granted: Mar 11, 2003
Filed: Apr 13, 2001
Inventor
Tetsuya Saito
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.