Granted Patent
Utility
US 5,551,543 · App. 08/410,728
Sorter
Inventors:
James F. Mattingly, Ellsworth H. Collins
Patented Case
View Patent ↗
Granted: Sep 3, 1996
Filed: Mar 27, 1995
Inventors
James F. Mattingly
Ellsworth H. Collins
Assignee (at issue)
The Interlake Companies, 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.