Granted Patent
Utility
US 4,443,211 · App. 06/323,961
Envelope assembly apparatus
Inventor:
Robert Wooley
Patented Case
View Patent ↗
Granted: Apr 17, 1984
Filed: Nov 19, 1981
Inventor
Robert Wooley
Assignee (at issue)
National Service Industries, 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.