Granted Patent
Utility
US 4,548,352 · App. 06/572,444
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Inventors:
James L. Capo, William D. Cunningham
Patented Case
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Granted: Oct 22, 1985
Filed: Jan 20, 1984
Inventors
James L. Capo
William D. Cunningham
Assignees (at issue)
INTERNATIONAL PAPER COMPANY
Hardee's Food Systems, 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.