Granted Patent
Utility
US 4,570,922 · App. 06/505,296
Envelope stacking arrangement for mail sorting machines
Inventor:
Roy Akers
Patented Case
View Patent ↗
Granted: Feb 18, 1986
Filed: Jun 17, 1983
Inventor
Roy Akers
Assignee (at issue)
Bell and Howell, LLC
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.