Granted Patent
Utility
US 4,849,016 · App. 07/134,678
Combined ultra slow electron beam and vacuum arc melting for barrier tube shell material
Inventors:
Samuel A. Worcester, Charles R. Woods, Glenn S. Galer, Richard L. Propst
Patented Case
View Patent ↗
Granted: Jul 18, 1989
Filed: Dec 18, 1987
Inventors
Samuel A. Worcester
Charles R. Woods
Glenn S. Galer
Richard L. Propst
Assignee (at issue)
Westinghouse Electric Company LLC
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.