Granted Patent
Utility
US 6,571,088 · App. 09/602,553
Automatic frequency control circuit
Inventor:
Osamu Hasegawa
Patented Case
View Patent ↗
Granted: May 27, 2003
Filed: Jun 23, 2000
Inventor
Osamu Hasegawa
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.