Granted Patent
Utility
US 4,993,752 · App. 07/451,779
Method of producing correspondence
Inventor:
Joseph J. Juszak
Patented Case
View Patent ↗
Granted: Feb 19, 1991
Filed: Dec 18, 1989
Inventor
Joseph J. Juszak
Assignee (at issue)
Wallace Computer Services, 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.