Granted Patent
Utility
US 4,720,176 · App. 06/865,212
Erase beam apparatus and method for spatial intensity threshold detection
Inventors:
Marvin Klein, Gilmore J. Dunning, George C. Valley
Patented Case
View Patent ↗
Granted: Jan 19, 1988
Filed: May 20, 1986
Inventors
Marvin Klein
Gilmore J. Dunning
George C. Valley
Assignee (at issue)
Hughes Aircraft 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.