Granted Patent
Utility
US 4,971,190 · App. 07/414,766
Conveyor cross switch
Inventors:
Howard Berends, Thomas L. Garzelloni, Harry E. Houghton
Patented Case
View Patent ↗
Granted: Nov 20, 1990
Filed: Sep 29, 1989
Inventors
Howard Berends
Thomas L. Garzelloni
Harry E. Houghton
Assignee (at issue)
Automaton, 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.