Granted Patent
Utility
US 4,593,935 · App. 06/644,901
Conditionally self-copying stationery
Inventor:
Peter J. M. Kearns
Patented Case
View Patent ↗
Granted: Jun 10, 1986
Filed: Aug 28, 1984
Inventor
Peter J. M. Kearns
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.