Granted Patent
Utility
US 4,328,963 · App. 06/098,546
Compact sorter
Inventors:
R. Clark DuBois, John C. Hamma
Patented Case
View Patent ↗
Granted: May 11, 1982
Filed: Nov 29, 1979
Inventors
R. Clark DuBois
John C. Hamma
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.