Granted Patent
Utility
US 4,352,190 · App. 06/205,037
Device for automatic equalization of electrical data transmission channels
Inventor:
Josef Hullwegen
Patented Case
View Patent ↗
Granted: Sep 28, 1982
Filed: Nov 7, 1980
Inventor
Josef Hullwegen
Assignee (at issue)
Nixdorf Computer AG
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.