Granted Patent
Utility
US 5,300,775 · App. 08/015,694
Method of selecting a spatial energy spread within an electron beam, and an electron beam apparatus suitable for carrying out such a method
Inventor:
Karel Diederick Van Der Mast
Patented Case
View Patent ↗
Granted: Apr 5, 1994
Filed: Feb 9, 1993
Inventor
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.