Granted Patent
Utility
US 5,230,623 · App. 07/805,371
Operating pointer with interactive computergraphics
Inventors:
Barton L. Guthrie, Eric R. Cosman
Patented Case
View Patent ↗
Granted: Jul 27, 1993
Filed: Dec 10, 1991
Inventors
Barton L. Guthrie
Eric R. Cosman
Assignee (at issue)
Radionics, 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.