Granted Patent
Utility
US 4,939,685 · App. 07/455,893
Normalized frequency domain LMS adaptive filter
Inventor:
Paul L. Feintuch
Patented Case
View Patent ↗
Granted: Jul 3, 1990
Filed: Dec 27, 1989
Inventor
Paul L. Feintuch
Assignee (at issue)
Hughes Aircraft Company
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.