Granted Patent
Utility
US 4,985,639 · App. 07/376,783
Logic edge timing generation
Inventors:
Denny M. Renfrow, Francis X. Schumacher, Edward R. Helder
Patented Case
View Patent ↗
Granted: Jan 15, 1991
Filed: Jul 7, 1989
Inventors
Denny M. Renfrow
Francis X. Schumacher
Edward R. Helder
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.