Granted Patent
Utility
US 5,054,621 · App. 07/451,925
Document sorting apparatus
Inventors:
Gary J. Murphy, Derrick L. Murphy, Michael J. Murphy, Michael Barnes
Patented Case
View Patent ↗
Granted: Oct 8, 1991
Filed: Dec 18, 1989
Inventors
Gary J. Murphy
Derrick L. Murphy
Michael J. Murphy
Michael Barnes
Assignee (at issue)
Hybrid Systems Limited
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.