Granted Patent
Utility
US 4,148,117 · App. 05/765,702
Electron bun optical adjustment apparatus and method
Inventors:
Pieter Bracke, Dieter Forker, Dieter Kropsch
Patented Case
View Patent ↗
Granted: Apr 10, 1979
Filed: Feb 4, 1977
Inventors
Pieter Bracke
Dieter Forker
Dieter Kropsch
Assignee (at issue)
International Standard Electric 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.