Granted Patent
Utility
US 4,690,555 · App. 06/793,941
Solid-state wavefront slope determination
Inventor:
Brent L. Ellerbroek
Patented Case
View Patent ↗
Granted: Sep 1, 1987
Filed: Nov 1, 1985
Inventor
Brent L. Ellerbroek
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.