Granted Patent
Utility
US 4,584,938 · App. 06/672,569
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Inventor:
Donald L. Karn
Patented Case
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Granted: Apr 29, 1986
Filed: Nov 19, 1984
Inventor
Donald L. Karn
Assignee (at issue)
Monarch Marking 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.