Granted Patent
Utility
US 4,342,949 · App. 06/093,008
Charged particle beam structure having electrostatic coarse and fine double deflection system with dynamic focus and diverging beam
Inventors:
Kenneth J. Harte, Edward C. Dougherty
Patented Case
View Patent ↗
Granted: Aug 3, 1982
Filed: Nov 9, 1979
Inventors
Kenneth J. Harte
Edward C. Dougherty
Assignee (at issue)
Control Data Corporation
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.