Granted Patent
Utility
US 5,563,681 · App. 08/540,290
Article and method for cooling a sheet of material while minimizing wrinkling and curling within the sheet
Inventors:
John Orlin Kirkwold, Roger H. Muntifering, Steven W. Sorensen, Thomas F. Gotich, Robert M. Biegler
Patented Case
View Patent ↗
Granted: Oct 8, 1996
Filed: Oct 6, 1995
Inventors
John Orlin Kirkwold
Roger H. Muntifering
Steven W. Sorensen
Thomas F. Gotich
Robert M. Biegler
Assignee (at issue)
Minnesota Mining and Manufacturing Company
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.