Granted Patent
Utility
US 6,002,926 · App. 08/936,650
Double superheterodyne type receiving circuit
Inventor:
Osamu Shiraishi
Patented Case
View Patent ↗
Granted: Dec 14, 1999
Filed: Sep 24, 1997
Inventor
Osamu Shiraishi
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.