Granted Patent
Utility
US 6,710,752 · App. 10/157,054
Helical antenna
Inventors:
Tetsuya Saito, Makoto Yamaguchi
Patented Case
View Patent ↗
Granted: Mar 23, 2004
Filed: May 30, 2002
Inventors
Tetsuya Saito
Makoto Yamaguchi
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.