Granted Patent
Utility
US 6,700,921 · App. 09/479,635
Spread-spectrum communication apparatus
Inventor:
Akira Shibuta
Patented Case
View Patent ↗
Granted: Mar 2, 2004
Filed: Jan 7, 2000
Inventor
Akira Shibuta
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, 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.