Granted Patent
Utility
US 6,000,553 · App. 09/175,074
Multiple screen system
Inventors:
Douglas Cohen, Mauricio Escobar
Patented Case
View Patent ↗
Granted: Dec 14, 1999
Filed: Oct 19, 1998
Inventors
Douglas Cohen
Mauricio Escobar
Assignee (at issue)
Ohio Central Steel Company
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.