Granted Patent
Utility
US 6,043,749 · App. 09/060,818
Frequency detection circuit
Inventors:
Hirofumi Saito, Norio Funahashi
Patented Case
View Patent ↗
Granted: Mar 28, 2000
Filed: Apr 16, 1998
Inventors
Hirofumi Saito
Norio Funahashi
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.