Granted Patent
Utility
US 4,307,293 · App. 06/175,148
Optical reader kit for letter sorting machines
Inventors:
Sebastian J. Lazzarotti, Paul E. Tartar
Patented Case
View Patent ↗
Granted: Dec 22, 1981
Filed: Aug 4, 1980
Inventors
Sebastian J. Lazzarotti
Paul E. Tartar
Assignee (at issue)
Burroughs, 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.