Granted Patent
Utility
US 4,802,750 · App. 07/080,761
Real image projection system with two curved reflectors of paraboloid of revolution shape having each vertex coincident with the focal point of the other
Inventor:
Steve Welck
Patented Case
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Granted: Feb 7, 1989
Filed: Aug 3, 1987
Inventor
Steve Welck
Assignee (at issue)
Grand Mirage
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.