Granted Patent
Utility
US 4,085,330 · App. 05/798,392
Focused ion beam mask maker
Inventor:
John E. Wolfe
Patented Case
View Patent ↗
Granted: Apr 18, 1978
Filed: May 19, 1977
Inventor
John E. Wolfe
Assignee (at issue)
Burroughs, Inc.
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.