Granted Patent
Utility
US 4,677,620 · App. 06/706,578
Graphical input of timing relationships
Inventors:
Steven R. Sutton, Gerd H. Hoeren
Patented Case
View Patent ↗
Granted: Jun 30, 1987
Filed: Feb 28, 1985
Inventors
Steven R. Sutton
Gerd H. Hoeren
Assignee (at issue)
Tektronix, 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.