Granted Patent
Utility
US 5,457,981 · App. 08/190,256
Hemming press
Inventors:
Gerald A. Brown, William R. Hartley, Mark P. Jehmlich, Jeffrey S. McNamara, John C. Verzura
Patented Case
View Patent ↗
Granted: Oct 17, 1995
Filed: Feb 1, 1994
Inventors
Gerald A. Brown
William R. Hartley
Mark P. Jehmlich
Jeffrey S. McNamara
John C. Verzura
Assignee (at issue)
Western Atlas, 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.