Granted Patent
Utility
US 5,870,098 · App. 08/805,499
Method for rendering shadows on a graphical display
Inventor:
Harold Dee Gardiner
Patented Case
View Patent ↗
Granted: Feb 9, 1999
Filed: Feb 26, 1997
Inventor
Harold Dee Gardiner
Assignee (at issue)
Evans & Sutherland Computer 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.