Granted Patent
Utility
US 6,538,520 · App. 09/982,156
Methods and apparatus for producing a reference frequency signal with use of a reference frequency quadrupler having frequency selection controls
Inventors:
Allen Carl Merrill, Joseph Balardeta, Wei Fu, Mehmet Mustafa Eker
Patented Case
View Patent ↗
Granted: Mar 25, 2003
Filed: Oct 18, 2001
Inventors
Allen Carl Merrill
Joseph Balardeta
Wei Fu
Mehmet Mustafa Eker
Assignee (at issue)
APPLIED MICRO CIRCUITS 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.