Granted Patent
Utility
US 4,188,250 · App. 05/881,971
Method of making a composite web
Inventor:
Joseph J. Grass
Patented Case
View Patent ↗
Granted: Feb 12, 1980
Filed: Feb 27, 1978
Inventor
Joseph J. Grass
Assignee (at issue)
Monarch Marking Systems, 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.