Granted Patent
Utility
US 4,661,709 · App. 06/749,792
Modular all-electrostatic electron-optical column and assembly of said columns into an array and method of manufacture
Inventors:
David M. Walker, Alan P. Sliski, Kenneth J. Harte, John J. Carrona
Patented Case
View Patent ↗
Granted: Apr 28, 1987
Filed: Jun 28, 1985
Inventors
David M. Walker
Alan P. Sliski
Kenneth J. Harte
John J. Carrona
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.