Granted Patent
Utility
US 5,336,885 · App. 07/963,647
Electron beam apparatus
Inventors:
Harald Rose, Ralf Degenhardt, Karel Diederick Van Der Mast
Patented Case
View Patent ↗
Granted: Aug 9, 1994
Filed: Oct 20, 1992
Inventors
Harald Rose
Ralf Degenhardt
Karel Diederick Van Der Mast
Assignee (at issue)
U.S. Philips 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.