Granted Patent
Utility
US 4,506,237 · App. 06/445,612
Adjustable slope equalizer
Inventor:
Lester T. Matzek
Patented Case
View Patent ↗
Granted: Mar 19, 1985
Filed: Nov 30, 1982
Inventor
Lester T. Matzek
Assignee (at issue)
Rockwell International 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.