Granted Patent
Utility
US 5,566,570 · App. 08/278,586
Method and apparatus for evaluating fold endurance and surface adhesion of sheet materials
Inventors:
Steven G. Hankel, Dennis E. Gunderson, C. Timothy Scott, Roland Gleisner
Patented Case
View Patent ↗
Granted: Oct 22, 1996
Filed: Jul 21, 1994
Inventors
Steven G. Hankel
Dennis E. Gunderson
C. Timothy Scott
Roland Gleisner
Assignee (at issue)
Director, Bureau of Engraving and Printing, Department of the Treasury
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.