Granted Patent
Utility
US 4,872,127 · App. 07/142,688
Ripple rejection filter
Inventor:
Dennis C. Nolan
Patented Case
View Patent ↗
Granted: Oct 3, 1989
Filed: Jan 7, 1988
Inventor
Dennis C. Nolan
Assignee (at issue)
Magnetek, Inc.
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.