Granted Patent
Utility
US 4,778,233 · App. 06/909,701
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Inventors:
Eric Christenson, Paul M. Allen
Patented Case
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Granted: Oct 18, 1988
Filed: Sep 19, 1986
Inventors
Eric Christenson
Paul M. Allen
Assignee (at issue)
Ateo Corporation
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.