Granted Patent
Utility
US 5,515,402 · App. 07/930,072
Quadrature filter with real conversion
Inventor:
David B. Chester
Patented Case
View Patent ↗
Granted: May 7, 1996
Filed: Aug 14, 1992
Inventor
David B. Chester
Assignee (at issue)
HARRIS 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.