Granted Patent
Utility
US 4,337,936 · App. 06/147,357
Compact sorter
Inventor:
Frederick J. Lawrence
Patented Case
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Granted: Jul 6, 1982
Filed: May 7, 1980
Inventor
Frederick J. Lawrence
Assignee (at issue)
Gradco/Dendoki, 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.