Granted Patent
Utility
US 4,953,116 · App. 07/409,177
Digital word output high-pass filter apparatus
Inventor:
Blaine J. Nelson
Patented Case
View Patent ↗
Granted: Aug 28, 1990
Filed: Sep 19, 1989
Inventor
Blaine J. Nelson
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.