Granted Patent
Utility
US 4,438,698 · App. 06/510,741
Endorsing apparatus utilizing holding force pressure
Inventors:
John L. Sullivan, Robert Pearson, Donald A. Youngblood
Patented Case
View Patent ↗
Granted: Mar 27, 1984
Filed: Jul 5, 1983
Inventors
John L. Sullivan
Robert Pearson
Donald A. Youngblood
Assignee (at issue)
Burroughs, 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.