Granted Patent
Utility
US 5,125,885 · App. 07/589,510
Bonded envelope stack and method and apparatus for making same
Inventors:
Robert Wooley, A. Derrell Hightower
Patented Case
View Patent ↗
Granted: Jun 30, 1992
Filed: Sep 28, 1990
Inventors
Robert Wooley
A. Derrell Hightower
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.