Granted Patent
Utility
US 5,136,166 · App. 07/648,667
Temperature stable magnetic deflection assembly
Inventor:
Lydia J. Young
Patented Case
View Patent ↗
Granted: Aug 4, 1992
Filed: Jan 31, 1991
Inventor
Lydia J. Young
Assignee (at issue)
ETEC SYSTEMS, INC.
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.