Granted Patent
Utility
US 5,663,563 · App. 08/603,663
Electronic effective focal length compensator
Inventors:
Stephen J. Herbst, Weston K. Furukawa
Patented Case
View Patent ↗
Granted: Sep 2, 1997
Filed: Feb 20, 1996
Inventors
Stephen J. Herbst
Weston K. Furukawa
Assignee (at issue)
HUGHES ELECTRONICS LIMITED
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.