Granted Patent
Utility
US 4,889,146 · App. 07/275,715
Apparatus for cooling a web
Inventor:
Lawrence E. Beal
Patented Case
View Patent ↗
Granted: Dec 26, 1989
Filed: Nov 23, 1988
Inventor
Lawrence E. Beal
Assignee (at issue)
Eagle-Picher 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.